./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7 --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 b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:59:41,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:59:41,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:59:41,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:59:41,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:59:41,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:59:41,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:59:41,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:59:41,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:59:41,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:59:41,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:59:41,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:59:41,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:59:41,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:59:41,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:59:41,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:59:41,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:59:41,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:59:41,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:59:41,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:59:41,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:59:41,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:59:41,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:59:41,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:59:41,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:59:41,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:59:41,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:59:41,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:59:41,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:59:41,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:59:41,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:59:41,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:59:41,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:59:41,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:59:41,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:59:41,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:59:41,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:59:41,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:59:41,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:59:41,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:59:41,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:59:41,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:59:41,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:59:41,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:59:41,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:59:41,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:59:41,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:59:41,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:59:41,250 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:59:41,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:59:41,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:59:41,250 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:59:41,252 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:59:41,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:59:41,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:59:41,252 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:59:41,253 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:59:41,253 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:59:41,253 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:59:41,253 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:59:41,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:59:41,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:59:41,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:59:41,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:59:41,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:59:41,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:59:41,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:59:41,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:59:41,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:59:41,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:59:41,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:59:41,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:59:41,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:59:41,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:59:41,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:59:41,261 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:59:41,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:59:41,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:59:41,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:59:41,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:59:41,262 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_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b [2021-11-25 18:59:41,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:59:41,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:59:41,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:59:41,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:59:41,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:59:41,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2021-11-25 18:59:41,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/data/e5dc132d6/a81eeb7294aa463a8bda741dacf223ab/FLAGfd5dedb29 [2021-11-25 18:59:42,721 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:59:42,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2021-11-25 18:59:42,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/data/e5dc132d6/a81eeb7294aa463a8bda741dacf223ab/FLAGfd5dedb29 [2021-11-25 18:59:43,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/data/e5dc132d6/a81eeb7294aa463a8bda741dacf223ab [2021-11-25 18:59:43,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:59:43,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:59:43,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:43,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:59:43,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:59:43,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:43" (1/1) ... [2021-11-25 18:59:43,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a963a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:43, skipping insertion in model container [2021-11-25 18:59:43,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:43" (1/1) ... [2021-11-25 18:59:43,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:59:43,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:59:43,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2021-11-25 18:59:43,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2021-11-25 18:59:44,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,896 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,897 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,918 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:44,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:59:45,283 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:59:45,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:59:45,286 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:59:45,287 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:59:45,288 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:59:45,289 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:59:45,290 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:59:45,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:59:45,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:59:45,456 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:59:45,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:45,502 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:59:45,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2021-11-25 18:59:45,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2021-11-25 18:59:45,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,637 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,639 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:59:45,749 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:59:45,750 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:59:45,752 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:59:45,754 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:59:45,763 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:59:45,764 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:59:45,764 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:59:45,765 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:59:45,766 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:59:45,767 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:59:45,806 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:59:45,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:46,144 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:59:46,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46 WrapperNode [2021-11-25 18:59:46,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:46,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:46,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:59:46,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:59:46,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,364 INFO L137 Inliner]: procedures = 679, calls = 1041, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 142 [2021-11-25 18:59:46,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:46,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:59:46,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:59:46,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:59:46,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:59:46,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:59:46,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:59:46,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:59:46,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:59:46,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:46,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:59:46,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:59:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:59:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:59:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:59:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-25 18:59:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-25 18:59:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:59:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2021-11-25 18:59:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2021-11-25 18:59:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:59:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:59:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:59:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:59:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:59:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:59:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:59:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:59:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:59:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 18:59:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 18:59:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:59:46,847 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:59:46,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:59:47,284 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:59:47,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:59:47,457 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:59:47,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:59:47 BoogieIcfgContainer [2021-11-25 18:59:47,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:59:47,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:59:47,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:59:47,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:59:47,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:59:43" (1/3) ... [2021-11-25 18:59:47,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ec8c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:59:47, skipping insertion in model container [2021-11-25 18:59:47,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46" (2/3) ... [2021-11-25 18:59:47,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ec8c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:59:47, skipping insertion in model container [2021-11-25 18:59:47,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:59:47" (3/3) ... [2021-11-25 18:59:47,477 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2021-11-25 18:59:47,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:59:47,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:59:47,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:59:47,560 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 [2021-11-25 18:59:47,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:59:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-25 18:59:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:59:47,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:47,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:47,604 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash -176466560, now seen corresponding path program 1 times [2021-11-25 18:59:47,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:47,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364147856] [2021-11-25 18:59:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:47,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 18:59:48,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:48,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364147856] [2021-11-25 18:59:48,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364147856] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234240539] [2021-11-25 18:59:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:48,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:48,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:48,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:59:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:48,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-25 18:59:48,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:48,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:59:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:59:49,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2021-11-25 18:59:49,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:49,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2021-11-25 18:59:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:59:51,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:59:51,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234240539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:51,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:59:51,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2021-11-25 18:59:51,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224807327] [2021-11-25 18:59:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:51,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:59:51,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:59:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:59:51,592 INFO L87 Difference]: Start difference. First operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-25 18:59:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:51,938 INFO L93 Difference]: Finished difference Result 104 states and 149 transitions. [2021-11-25 18:59:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:59:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 37 [2021-11-25 18:59:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:51,952 INFO L225 Difference]: With dead ends: 104 [2021-11-25 18:59:51,953 INFO L226 Difference]: Without dead ends: 62 [2021-11-25 18:59:51,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:51,962 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 14 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:51,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2021-11-25 18:59:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-25 18:59:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2021-11-25 18:59:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-25 18:59:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2021-11-25 18:59:52,019 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 37 [2021-11-25 18:59:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:52,020 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2021-11-25 18:59:52,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-25 18:59:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2021-11-25 18:59:52,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 18:59:52,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:52,024 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:52,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:52,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 18:59:52,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1924856341, now seen corresponding path program 1 times [2021-11-25 18:59:52,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:52,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384803281] [2021-11-25 18:59:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:52,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 18:59:52,516 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:52,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384803281] [2021-11-25 18:59:52,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384803281] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:52,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781728407] [2021-11-25 18:59:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:52,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:52,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:52,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:52,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:59:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:52,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-25 18:59:52,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:52,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:59:52,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:52,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:59:53,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 18:59:53,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-11-25 18:59:53,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 18:59:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-11-25 18:59:53,331 INFO L354 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2021-11-25 18:59:53,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 110 [2021-11-25 18:59:53,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2021-11-25 18:59:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-25 18:59:53,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-11-25 18:59:53,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 44 [2021-11-25 18:59:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:53,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2021-11-25 18:59:53,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:59:55,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:55,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:55,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:55,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:55,585 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:59:55,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 102 treesize of output 40 [2021-11-25 18:59:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:59:55,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:03,638 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_212 Int)) (or (= v_ArrVal_212 0) (and (forall ((v_ArrVal_224 Int) (v_ArrVal_226 (Array Int Int)) (v_ArrVal_222 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| 0)))) (store (store .cse0 v_ArrVal_212 v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse0 v_ArrVal_212 v_ArrVal_222) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 8)) 0)) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_225 (Array Int Int))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_212)))) (store (store .cse1 v_ArrVal_212 v_ArrVal_225) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse1 v_ArrVal_212 v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_212))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 16)) 0)) (or (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_225 (Array Int Int))) (not (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_212)))) (store (store .cse2 v_ArrVal_212 v_ArrVal_225) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse2 v_ArrVal_212 v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_212))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|) 0))) (forall ((v_ArrVal_224 Int) (v_ArrVal_226 (Array Int Int)) (v_ArrVal_222 (Array Int Int))) (not (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| 0)))) (store (store .cse3 v_ArrVal_212 v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse3 v_ArrVal_212 v_ArrVal_222) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|) 0)))) (or (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_225 (Array Int Int))) (not (= (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_212)))) (store (store .cse4 v_ArrVal_212 v_ArrVal_225) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse4 v_ArrVal_212 v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_212))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 24)) 0))) (forall ((v_ArrVal_224 Int) (v_ArrVal_226 (Array Int Int)) (v_ArrVal_222 (Array Int Int))) (not (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| 0)))) (store (store .cse5 v_ArrVal_212 v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse5 v_ArrVal_212 v_ArrVal_222) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 24)) 0)))) (forall ((v_ArrVal_224 Int) (v_ArrVal_226 (Array Int Int)) (v_ArrVal_222 (Array Int Int))) (= (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| 0)))) (store (store .cse6 v_ArrVal_212 v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse6 v_ArrVal_212 v_ArrVal_222) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 16)) 0)) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_225 (Array Int Int))) (= (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_212)))) (store (store .cse7 v_ArrVal_212 v_ArrVal_225) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store .cse7 v_ArrVal_212 v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_212))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 8)) 0)) (or (not (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| 0)))) (<= |c_#StackHeapBarrier| v_ArrVal_212))) is different from false [2021-11-25 19:00:04,143 INFO L354 Elim1Store]: treesize reduction 78, result has 27.1 percent of original size [2021-11-25 19:00:04,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 500 treesize of output 385 [2021-11-25 19:00:04,547 INFO L354 Elim1Store]: treesize reduction 78, result has 27.1 percent of original size [2021-11-25 19:00:04,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 385 treesize of output 269 [2021-11-25 19:00:04,585 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:00:04,586 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 1019 treesize of output 979 [2021-11-25 19:00:04,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:00:04,641 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 1613 treesize of output 1579 [2021-11-25 19:00:04,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1814 treesize of output 1806 [2021-11-25 19:00:04,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1806 treesize of output 1802 [2021-11-25 19:00:04,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1828 treesize of output 1824 [2021-11-25 19:00:04,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1824 treesize of output 1822 [2021-11-25 19:00:04,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1854 treesize of output 1846 [2021-11-25 19:00:05,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1846 treesize of output 1842 [2021-11-25 19:00:05,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1906 treesize of output 1890 [2021-11-25 19:00:05,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1954 treesize of output 1938 [2021-11-25 19:00:05,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1938 treesize of output 1930 [2021-11-25 19:00:05,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1994 treesize of output 1978 [2021-11-25 19:00:05,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1978 treesize of output 1970 [2021-11-25 19:00:05,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1970 treesize of output 1962 [2021-11-25 19:00:05,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1996 treesize of output 1988 [2021-11-25 19:00:05,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1988 treesize of output 1984 [2021-11-25 19:00:05,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1984 treesize of output 1976 [2021-11-25 19:00:05,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2044 treesize of output 2028 [2021-11-25 19:00:06,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:00:06,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:07,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:07,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:07,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:07,337 INFO L354 Elim1Store]: treesize reduction 82, result has 58.4 percent of original size [2021-11-25 19:00:07,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 168 treesize of output 258 [2021-11-25 19:00:07,614 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 19:00:07,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 35 [2021-11-25 19:00:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 1 not checked. [2021-11-25 19:00:07,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781728407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:00:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [471183591] [2021-11-25 19:00:07,785 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 19:00:07,786 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:07,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:07,805 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:07,806 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:07,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:07,936 INFO L354 Elim1Store]: treesize reduction 44, result has 42.9 percent of original size [2021-11-25 19:00:07,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 58 [2021-11-25 19:00:07,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,028 INFO L354 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2021-11-25 19:00:08,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2021-11-25 19:00:08,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 19:00:08,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2021-11-25 19:00:08,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2021-11-25 19:00:08,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 19:00:08,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:08,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:08,791 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:00:08,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2021-11-25 19:00:08,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,936 INFO L354 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2021-11-25 19:00:08,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2021-11-25 19:00:08,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:08,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 19:00:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2021-11-25 19:00:09,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2021-11-25 19:00:09,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 19:00:09,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:00:09,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:00:09,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 13 [2021-11-25 19:00:09,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:09,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 23 [2021-11-25 19:00:09,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2021-11-25 19:00:09,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:09,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:00:09,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 13 [2021-11-25 19:00:09,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:09,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 23 [2021-11-25 19:00:09,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2021-11-25 19:00:09,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:09,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:00:09,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:00:09,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-11-25 19:00:09,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 19:00:09,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:09,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 19:00:10,421 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 55 for LOIs [2021-11-25 19:00:10,765 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 143 for LOIs [2021-11-25 19:00:10,835 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 111 for LOIs [2021-11-25 19:00:10,877 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:00:13,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [471183591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:13,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:00:13,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 9, 8] total 30 [2021-11-25 19:00:13,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436217100] [2021-11-25 19:00:13,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:13,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:00:13,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:00:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=721, Unknown=1, NotChecked=54, Total=870 [2021-11-25 19:00:13,838 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 19:00:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:14,398 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2021-11-25 19:00:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:00:14,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2021-11-25 19:00:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:14,402 INFO L225 Difference]: With dead ends: 89 [2021-11-25 19:00:14,402 INFO L226 Difference]: Without dead ends: 52 [2021-11-25 19:00:14,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=103, Invalid=770, Unknown=1, NotChecked=56, Total=930 [2021-11-25 19:00:14,405 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:14,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 280 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2021-11-25 19:00:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-25 19:00:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-11-25 19:00:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:00:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-11-25 19:00:14,421 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 38 [2021-11-25 19:00:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:14,422 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-11-25 19:00:14,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 19:00:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-11-25 19:00:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 19:00:14,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:14,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:14,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:14,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:14,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:00:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1266222812, now seen corresponding path program 1 times [2021-11-25 19:00:14,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:14,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521764127] [2021-11-25 19:00:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:14,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:00:14,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:14,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521764127] [2021-11-25 19:00:14,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521764127] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:14,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125149067] [2021-11-25 19:00:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:14,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:14,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:14,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:14,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:00:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:15,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:00:15,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:00:15,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:15,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125149067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:15,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:00:15,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-25 19:00:15,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498827933] [2021-11-25 19:00:15,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:15,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:00:15,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:15,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:00:15,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:00:15,145 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:00:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:15,292 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2021-11-25 19:00:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:15,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 39 [2021-11-25 19:00:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:15,294 INFO L225 Difference]: With dead ends: 88 [2021-11-25 19:00:15,295 INFO L226 Difference]: Without dead ends: 53 [2021-11-25 19:00:15,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:00:15,297 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:15,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 151 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:00:15,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-25 19:00:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-25 19:00:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-25 19:00:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-11-25 19:00:15,316 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 39 [2021-11-25 19:00:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:15,317 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-11-25 19:00:15,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:00:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-11-25 19:00:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 19:00:15,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:15,320 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:15,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:15,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:15,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:00:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:15,526 INFO L85 PathProgramCache]: Analyzing trace with hash -693180958, now seen corresponding path program 1 times [2021-11-25 19:00:15,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:15,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014343245] [2021-11-25 19:00:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:15,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:00:15,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:15,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014343245] [2021-11-25 19:00:15,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014343245] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:15,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660445939] [2021-11-25 19:00:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:15,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:15,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:15,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:15,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:00:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:15,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:00:15,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:00:15,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:15,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660445939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:15,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:00:15,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-25 19:00:15,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059725608] [2021-11-25 19:00:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:15,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:00:15,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:00:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:00:15,979 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:00:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:16,223 INFO L93 Difference]: Finished difference Result 105 states and 143 transitions. [2021-11-25 19:00:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:00:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 41 [2021-11-25 19:00:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:16,226 INFO L225 Difference]: With dead ends: 105 [2021-11-25 19:00:16,226 INFO L226 Difference]: Without dead ends: 65 [2021-11-25 19:00:16,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:00:16,229 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:16,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 182 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:00:16,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-25 19:00:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2021-11-25 19:00:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-25 19:00:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2021-11-25 19:00:16,248 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 41 [2021-11-25 19:00:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:16,248 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2021-11-25 19:00:16,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:00:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2021-11-25 19:00:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:00:16,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:16,251 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:16,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-25 19:00:16,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:16,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:00:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash 938537906, now seen corresponding path program 1 times [2021-11-25 19:00:16,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:16,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672159482] [2021-11-25 19:00:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:16,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:00:16,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672159482] [2021-11-25 19:00:16,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672159482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677740128] [2021-11-25 19:00:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:16,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:16,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:16,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:16,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:00:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:16,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:00:16,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:00:16,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:16,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677740128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:16,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:00:16,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-25 19:00:16,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411439021] [2021-11-25 19:00:16,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:16,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:16,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:16,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:16,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:16,873 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:00:16,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:16,926 INFO L93 Difference]: Finished difference Result 106 states and 147 transitions. [2021-11-25 19:00:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2021-11-25 19:00:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:16,929 INFO L225 Difference]: With dead ends: 106 [2021-11-25 19:00:16,929 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 19:00:16,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:16,931 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:16,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 95 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:00:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 19:00:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-11-25 19:00:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 36 states have internal predecessors, (42), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-25 19:00:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2021-11-25 19:00:16,947 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 42 [2021-11-25 19:00:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:16,947 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2021-11-25 19:00:16,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:00:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-11-25 19:00:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:00:16,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:16,950 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:16,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:17,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:17,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:00:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1523962277, now seen corresponding path program 1 times [2021-11-25 19:00:17,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:17,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811422197] [2021-11-25 19:00:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:17,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:00:17,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:17,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811422197] [2021-11-25 19:00:17,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811422197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:17,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502222311] [2021-11-25 19:00:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:17,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:17,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:17,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:17,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:00:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:17,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-25 19:00:17,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:17,558 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:00:17,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 19:00:17,575 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:00:17,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 19:00:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:00:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:00:30,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502222311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:00:30,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481437448] [2021-11-25 19:00:30,609 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-25 19:00:30,609 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:30,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:30,610 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:30,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:30,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,705 INFO L354 Elim1Store]: treesize reduction 44, result has 42.9 percent of original size [2021-11-25 19:00:30,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 58 [2021-11-25 19:00:30,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:30,800 INFO L354 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2021-11-25 19:00:30,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2021-11-25 19:00:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 19:00:31,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2021-11-25 19:00:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 19:00:31,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2021-11-25 19:00:31,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 19:00:31,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 101 [2021-11-25 19:00:31,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2021-11-25 19:00:31,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 19:00:32,460 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 135 for LOIs [2021-11-25 19:00:33,190 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 179 for LOIs [2021-11-25 19:00:33,295 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 111 for LOIs [2021-11-25 19:00:33,324 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2021-11-25 19:00:33,431 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:00:40,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1481437448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:40,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:00:40,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 14, 8] total 41 [2021-11-25 19:00:40,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775704742] [2021-11-25 19:00:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:40,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:00:40,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:00:40,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1454, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 19:00:40,372 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-25 19:00:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:43,082 INFO L93 Difference]: Finished difference Result 140 states and 193 transitions. [2021-11-25 19:00:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:00:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.3125) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 45 [2021-11-25 19:00:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:43,085 INFO L225 Difference]: With dead ends: 140 [2021-11-25 19:00:43,085 INFO L226 Difference]: Without dead ends: 95 [2021-11-25 19:00:43,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=233, Invalid=1659, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 19:00:43,087 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 35 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:43,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 404 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 410 Invalid, 0 Unknown, 87 Unchecked, 1.1s Time] [2021-11-25 19:00:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-25 19:00:43,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2021-11-25 19:00:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 59 states have internal predecessors, (68), 24 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2021-11-25 19:00:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2021-11-25 19:00:43,117 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 45 [2021-11-25 19:00:43,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:43,118 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2021-11-25 19:00:43,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.3125) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-25 19:00:43,119 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2021-11-25 19:00:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 19:00:43,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:43,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:43,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:43,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:43,329 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:00:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:43,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1772458512, now seen corresponding path program 1 times [2021-11-25 19:00:43,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:43,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681314371] [2021-11-25 19:00:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:43,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:00:43,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681314371] [2021-11-25 19:00:43,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681314371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901533146] [2021-11-25 19:00:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:43,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:43,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:43,529 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:43,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6859e098-178c-4fdc-a6cd-9ddb86e1d98d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:00:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:43,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-25 19:00:43,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:43,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:00:43,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:43,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:00:44,015 INFO L354 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2021-11-25 19:00:44,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 84 [2021-11-25 19:00:44,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:44,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2021-11-25 19:00:44,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:44,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-11-25 19:00:44,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-25 19:00:44,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:44,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-25 19:00:44,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:00:51,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:00:57,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901533146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:00:57,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [506755986] [2021-11-25 19:00:57,013 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-25 19:00:57,014 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:57,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:57,014 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:57,015 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:57,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,102 INFO L354 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2021-11-25 19:00:57,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2021-11-25 19:00:57,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2021-11-25 19:00:57,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2021-11-25 19:00:57,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 19:00:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 19:00:57,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2021-11-25 19:00:57,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 19:00:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:57,610 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:00:57,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2021-11-25 19:00:57,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,720 INFO L354 Elim1Store]: treesize reduction 50, result has 47.9 percent of original size [2021-11-25 19:00:57,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 18 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 74 [2021-11-25 19:00:57,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:57,824 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:00:57,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2021-11-25 19:00:57,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 19:00:57,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:57,989 INFO L354 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2021-11-25 19:00:57,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2021-11-25 19:00:58,003 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 19:00:58,005 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 19:00:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:58,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:58,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:58,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:58,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:58,336 INFO L354 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2021-11-25 19:00:58,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 337 treesize of output 365 [2021-11-25 19:00:58,721 INFO L354 Elim1Store]: treesize reduction 60, result has 61.3 percent of original size [2021-11-25 19:00:58,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 304 treesize of output 385 [2021-11-25 19:00:59,190 INFO L354 Elim1Store]: treesize reduction 108, result has 48.8 percent of original size [2021-11-25 19:00:59,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 297 treesize of output 387 [2021-11-25 19:00:59,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:59,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:59,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:59,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:59,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:59,378 INFO L354 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2021-11-25 19:00:59,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 327 treesize of output 343 [2021-11-25 19:00:59,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:59,462 INFO L354 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2021-11-25 19:00:59,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 309 treesize of output 280 [2021-11-25 19:00:59,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 283 [2021-11-25 19:00:59,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:59,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2021-11-25 19:06:41,936 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 1950 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:12:39,660 WARN L227 SmtUtils]: Spent 38.66s on a formula simplification. DAG size of input: 2612 DAG size of output: 2604 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)