./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba --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 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:38:17,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:38:17,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:38:17,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:38:17,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:38:17,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:38:17,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:38:17,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:38:17,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:38:17,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:38:17,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:38:17,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:38:17,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:38:17,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:38:17,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:38:17,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:38:17,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:38:17,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:38:17,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:38:17,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:38:17,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:38:17,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:38:17,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:38:17,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:38:17,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:38:17,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:38:17,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:38:17,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:38:17,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:38:17,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:38:17,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:38:17,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:38:17,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:38:17,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:38:17,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:38:17,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:38:17,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:38:17,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:38:17,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:38:17,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:38:17,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:38:17,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:38:17,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:38:17,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:38:17,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:38:17,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:38:17,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:38:17,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:38:17,247 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:38:17,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:38:17,248 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:38:17,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:38:17,249 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:38:17,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:38:17,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:38:17,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:38:17,250 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:38:17,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:38:17,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:38:17,251 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:38:17,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:38:17,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:38:17,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:38:17,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:38:17,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:38:17,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:38:17,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:38:17,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:38:17,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:38:17,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:38:17,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:38:17,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:38:17,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:38:17,256 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:38:17,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:38:17,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:38:17,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:38:17,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:38:17,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:38:17,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:38:17,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d [2022-11-22 01:38:17,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:38:17,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:38:17,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:38:17,572 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:38:17,573 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:38:17,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-22 01:38:20,862 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:38:21,432 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:38:21,433 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-22 01:38:21,468 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/data/687441bfe/3a65a2a8ce8d4ceaae8fb1a7708b0b2c/FLAGcfae878eb [2022-11-22 01:38:21,486 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/data/687441bfe/3a65a2a8ce8d4ceaae8fb1a7708b0b2c [2022-11-22 01:38:21,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:38:21,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:38:21,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:38:21,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:38:21,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:38:21,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:38:21" (1/1) ... [2022-11-22 01:38:21,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5501309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:21, skipping insertion in model container [2022-11-22 01:38:21,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:38:21" (1/1) ... [2022-11-22 01:38:21,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:38:21,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:38:21,858 WARN L237 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_93b4895b-a773-4e20-ae18-50f3361a4d88/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-22 01:38:21,866 WARN L237 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_93b4895b-a773-4e20-ae18-50f3361a4d88/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-22 01:38:22,898 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,899 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,899 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,900 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,902 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,917 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,920 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,922 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,923 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,926 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,927 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,927 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:22,928 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,384 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 01:38:23,386 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 01:38:23,387 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 01:38:23,388 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 01:38:23,390 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 01:38:23,391 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 01:38:23,392 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 01:38:23,393 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 01:38:23,394 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 01:38:23,395 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 01:38:23,584 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 01:38:23,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:38:23,633 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:38:23,649 WARN L237 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_93b4895b-a773-4e20-ae18-50f3361a4d88/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-22 01:38:23,649 WARN L237 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_93b4895b-a773-4e20-ae18-50f3361a4d88/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-22 01:38:23,699 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,700 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,701 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,701 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,702 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,712 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,719 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,720 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,721 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,722 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,723 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,724 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,724 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 01:38:23,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 01:38:23,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 01:38:23,827 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 01:38:23,828 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 01:38:23,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 01:38:23,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 01:38:23,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 01:38:23,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 01:38:23,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 01:38:23,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 01:38:23,885 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 01:38:23,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:38:24,176 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:38:24,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24 WrapperNode [2022-11-22 01:38:24,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:38:24,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:38:24,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:38:24,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:38:24,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,351 INFO L138 Inliner]: procedures = 679, calls = 1035, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 92 [2022-11-22 01:38:24,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:38:24,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:38:24,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:38:24,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:38:24,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,419 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:38:24,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:38:24,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:38:24,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:38:24,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (1/1) ... [2022-11-22 01:38:24,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:38:24,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:24,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:38:24,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:38:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2022-11-22 01:38:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2022-11-22 01:38:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:38:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 01:38:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 01:38:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-22 01:38:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-22 01:38:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-22 01:38:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-22 01:38:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:38:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:38:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:38:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:38:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-11-22 01:38:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-11-22 01:38:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:38:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:38:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:38:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:38:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:38:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:38:24,828 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:38:24,842 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:38:25,086 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:38:25,269 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:38:25,273 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:38:25,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:38:25 BoogieIcfgContainer [2022-11-22 01:38:25,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:38:25,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:38:25,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:38:25,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:38:25,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:38:21" (1/3) ... [2022-11-22 01:38:25,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1219a7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:38:25, skipping insertion in model container [2022-11-22 01:38:25,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:24" (2/3) ... [2022-11-22 01:38:25,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1219a7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:38:25, skipping insertion in model container [2022-11-22 01:38:25,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:38:25" (3/3) ... [2022-11-22 01:38:25,292 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness.i [2022-11-22 01:38:25,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:38:25,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:38:25,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:38:25,376 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c484b34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:38:25,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:38:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 01:38:25,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:25,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:25,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2020375399, now seen corresponding path program 1 times [2022-11-22 01:38:25,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:25,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729847898] [2022-11-22 01:38:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:27,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:27,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729847898] [2022-11-22 01:38:27,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729847898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:27,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:27,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:38:27,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610126614] [2022-11-22 01:38:27,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:27,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:38:27,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:38:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:38:27,710 INFO L87 Difference]: Start difference. First operand has 41 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:38:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:28,038 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2022-11-22 01:38:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:38:28,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-22 01:38:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:28,057 INFO L225 Difference]: With dead ends: 78 [2022-11-22 01:38:28,057 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 01:38:28,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:38:28,069 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:28,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 179 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:38:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 01:38:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-22 01:38:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-22 01:38:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-22 01:38:28,148 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 16 [2022-11-22 01:38:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:28,149 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-22 01:38:28,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:38:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-22 01:38:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:38:28,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:28,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:28,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:38:28,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash 538116661, now seen corresponding path program 1 times [2022-11-22 01:38:28,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:28,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985883087] [2022-11-22 01:38:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:28,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:28,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985883087] [2022-11-22 01:38:28,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985883087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:28,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:28,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:38:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218021333] [2022-11-22 01:38:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:28,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:38:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:38:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:38:28,348 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:38:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:28,560 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2022-11-22 01:38:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:38:28,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-22 01:38:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:28,564 INFO L225 Difference]: With dead ends: 79 [2022-11-22 01:38:28,565 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 01:38:28,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:38:28,568 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:28,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 160 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:28,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 01:38:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-22 01:38:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-22 01:38:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-22 01:38:28,592 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 18 [2022-11-22 01:38:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:28,593 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-22 01:38:28,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:38:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-22 01:38:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:38:28,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:28,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:28,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:38:28,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1170184183, now seen corresponding path program 1 times [2022-11-22 01:38:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:28,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757993996] [2022-11-22 01:38:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:28,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:28,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:28,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757993996] [2022-11-22 01:38:28,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757993996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:28,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:28,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:38:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693106068] [2022-11-22 01:38:28,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:28,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:38:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:38:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:38:28,822 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:38:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:29,081 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-22 01:38:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:38:29,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-22 01:38:29,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:29,084 INFO L225 Difference]: With dead ends: 88 [2022-11-22 01:38:29,084 INFO L226 Difference]: Without dead ends: 49 [2022-11-22 01:38:29,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:38:29,090 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 61 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:29,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 170 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:38:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-22 01:38:29,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-22 01:38:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-22 01:38:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-22 01:38:29,117 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 20 [2022-11-22 01:38:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:29,117 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-22 01:38:29,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:38:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-22 01:38:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 01:38:29,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:29,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:29,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:38:29,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302219, now seen corresponding path program 1 times [2022-11-22 01:38:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:29,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825590248] [2022-11-22 01:38:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:29,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:29,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825590248] [2022-11-22 01:38:29,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825590248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:29,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:29,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:38:29,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564535099] [2022-11-22 01:38:29,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:29,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:38:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:29,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:38:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:38:29,402 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:38:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:29,670 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2022-11-22 01:38:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:38:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-22 01:38:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:29,672 INFO L225 Difference]: With dead ends: 88 [2022-11-22 01:38:29,672 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:38:29,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:38:29,674 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 54 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:29,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 170 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:38:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:38:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-11-22 01:38:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-22 01:38:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-22 01:38:29,684 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 21 [2022-11-22 01:38:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:29,684 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-22 01:38:29,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:38:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-22 01:38:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 01:38:29,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:29,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:29,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:38:29,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1961749134, now seen corresponding path program 1 times [2022-11-22 01:38:29,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:29,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369960750] [2022-11-22 01:38:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:31,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:31,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369960750] [2022-11-22 01:38:31,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369960750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:31,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:31,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 01:38:31,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688298534] [2022-11-22 01:38:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:31,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:38:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:38:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:38:31,041 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:38:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:31,536 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2022-11-22 01:38:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:38:31,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2022-11-22 01:38:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:31,538 INFO L225 Difference]: With dead ends: 85 [2022-11-22 01:38:31,539 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:38:31,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:38:31,540 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:31,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 199 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:38:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:38:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-11-22 01:38:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-22 01:38:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-22 01:38:31,550 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 24 [2022-11-22 01:38:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:31,551 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-22 01:38:31,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:38:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-22 01:38:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 01:38:31,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:31,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:31,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:38:31,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:31,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash -314126348, now seen corresponding path program 1 times [2022-11-22 01:38:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:31,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415021341] [2022-11-22 01:38:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:32,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415021341] [2022-11-22 01:38:32,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415021341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413746027] [2022-11-22 01:38:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:32,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:32,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:32,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:38:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:32,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-22 01:38:32,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:36,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:36,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413746027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:38:36,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [657104457] [2022-11-22 01:38:36,965 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-22 01:38:36,966 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:38:36,969 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:38:36,975 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:38:36,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:38:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,097 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 01:38:37,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 50 [2022-11-22 01:38:37,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,179 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:38:37,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-22 01:38:37,213 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-22 01:38:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:38:37,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:38:37,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:38:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:37,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:38:38,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:38:38,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:38:38,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:38:38,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:38:38,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:38:38,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:38:38,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:38:38,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:38:38,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:38:38,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:38:38,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:38:38,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:38,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:38:38,588 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 131 for LOIs [2022-11-22 01:38:38,694 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 133 for LOIs [2022-11-22 01:38:39,904 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 107 for LOIs [2022-11-22 01:38:39,929 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-22 01:38:40,018 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:38:49,237 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1202#(and (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= (select |#length| 3) 12) (<= 0 |__VERIFIER_assert_#in~cond|) (= 0 (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32))) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= 31 (select |#length| 2)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32)) 0) (<= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 8) 0) (= 32 (select |#length| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 8) 0) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 24)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 0) 16) (not (= (mod (ite (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 0) 0 1) 256) 0)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 4)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 16) 0) (<= 0 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 24) 0) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 0)) (= (select |#valid| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 1) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 16) 0) (< |#StackHeapBarrier| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 2)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 3)))) (= (select |#valid| 4) 1) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 1) 1) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 0) 0) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.base|) (= ~tl_last_error~0 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= 40 (select |#length| 4)) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:38:49,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:38:49,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:38:49,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 22 [2022-11-22 01:38:49,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452069892] [2022-11-22 01:38:49,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:38:49,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 01:38:49,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 01:38:49,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-11-22 01:38:49,241 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-22 01:38:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:53,009 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2022-11-22 01:38:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:38:53,010 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 26 [2022-11-22 01:38:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:53,011 INFO L225 Difference]: With dead ends: 102 [2022-11-22 01:38:53,011 INFO L226 Difference]: Without dead ends: 62 [2022-11-22 01:38:53,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=251, Invalid=2199, Unknown=0, NotChecked=0, Total=2450 [2022-11-22 01:38:53,013 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 170 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:53,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 185 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 381 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:38:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-22 01:38:53,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2022-11-22 01:38:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-22 01:38:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-11-22 01:38:53,052 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 26 [2022-11-22 01:38:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:53,052 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-11-22 01:38:53,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-22 01:38:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-11-22 01:38:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 01:38:53,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:53,054 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:38:53,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:53,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:38:53,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:53,257 INFO L85 PathProgramCache]: Analyzing trace with hash -694288424, now seen corresponding path program 1 times [2022-11-22 01:38:53,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:53,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853519872] [2022-11-22 01:38:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:38:53,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:53,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853519872] [2022-11-22 01:38:53,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853519872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:53,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:53,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:38:53,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904677277] [2022-11-22 01:38:53,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:53,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:38:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:53,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:38:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:38:53,431 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 01:38:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:53,583 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-11-22 01:38:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:38:53,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-22 01:38:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:53,585 INFO L225 Difference]: With dead ends: 61 [2022-11-22 01:38:53,586 INFO L226 Difference]: Without dead ends: 59 [2022-11-22 01:38:53,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:38:53,587 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:53,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 244 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-22 01:38:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-22 01:38:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-22 01:38:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-11-22 01:38:53,622 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 27 [2022-11-22 01:38:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:53,622 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-11-22 01:38:53,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 01:38:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-11-22 01:38:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:38:53,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:53,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:53,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:38:53,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash 739444463, now seen corresponding path program 1 times [2022-11-22 01:38:53,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:53,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300537307] [2022-11-22 01:38:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:53,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:38:54,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300537307] [2022-11-22 01:38:54,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300537307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181208552] [2022-11-22 01:38:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:54,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:54,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:54,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:38:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:54,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-22 01:38:54,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:54,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-22 01:38:54,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-22 01:39:17,316 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:39:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:17,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:39:18,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181208552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:18,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1364202995] [2022-11-22 01:39:18,014 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-22 01:39:18,014 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:39:18,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:39:18,015 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:39:18,015 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:39:18,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,076 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 01:39:18,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 50 [2022-11-22 01:39:18,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,141 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:39:18,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-22 01:39:18,166 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-22 01:39:18,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:39:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:39:18,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:39:18,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:39:18,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:39:18,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:39:18,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:39:18,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:18,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:39:19,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:39:19,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:39:19,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:39:19,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:39:19,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:39:19,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:39:19,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:39:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:39:19,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:39:19,286 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 130 for LOIs [2022-11-22 01:39:19,378 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 133 for LOIs [2022-11-22 01:39:20,377 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 107 for LOIs [2022-11-22 01:39:20,400 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-22 01:39:20,472 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:39:27,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1841#(and (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= (select |#length| 3) 12) (= 0 (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32))) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| Int)) (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 8) 0) (= (select |#valid| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 1) (= 32 (select |#length| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 24) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 4)) (not (= (mod (ite (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 0) 0 1) 256) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 0) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= 2 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 16) 0) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 8) 0) (< |#StackHeapBarrier| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 0)) (not (= 3 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 24) 0) (<= 0 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 16) 0))) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= 31 (select |#length| 2)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32)) 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (= (select |#valid| 4) 1) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 1) 1) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 0) 0) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.base|) (= ~tl_last_error~0 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= 40 (select |#length| 4)) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:39:27,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:39:27,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:39:27,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8] total 25 [2022-11-22 01:39:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174448263] [2022-11-22 01:39:27,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:39:27,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-22 01:39:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-22 01:39:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1699, Unknown=6, NotChecked=0, Total=1892 [2022-11-22 01:39:27,726 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-22 01:39:48,086 WARN L233 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 39 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:39:58,205 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:40:08,305 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:40:18,392 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:40:28,565 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:40:39,058 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:40:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:39,341 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2022-11-22 01:40:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:40:39,342 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 30 [2022-11-22 01:40:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:39,343 INFO L225 Difference]: With dead ends: 119 [2022-11-22 01:40:39,343 INFO L226 Difference]: Without dead ends: 69 [2022-11-22 01:40:39,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 100.7s TimeCoverageRelationStatistics Valid=300, Invalid=2450, Unknown=6, NotChecked=0, Total=2756 [2022-11-22 01:40:39,345 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 168 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:39,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 300 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:40:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-22 01:40:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2022-11-22 01:40:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 11 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-22 01:40:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-11-22 01:40:39,379 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 30 [2022-11-22 01:40:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:39,379 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-11-22 01:40:39,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-22 01:40:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-11-22 01:40:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-22 01:40:39,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:39,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:40:39,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:40:39,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:40:39,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:40:39,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1842443058, now seen corresponding path program 1 times [2022-11-22 01:40:39,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:39,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686177836] [2022-11-22 01:40:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:40:40,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:40,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686177836] [2022-11-22 01:40:40,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686177836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:40:40,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351304693] [2022-11-22 01:40:40,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:40,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:40:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:40:40,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:40:40,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:40:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:40,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-22 01:40:40,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:40:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:40:41,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:40:54,666 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:41:04,931 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:41:05,363 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:41:05,363 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 29 [2022-11-22 01:41:05,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:41:05,378 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 27 [2022-11-22 01:41:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:41:05,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351304693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:05,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [508981671] [2022-11-22 01:41:05,483 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-22 01:41:05,483 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:41:05,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:41:05,484 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:41:05,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:41:05,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,556 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:41:05,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-22 01:41:05,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-22 01:41:05,595 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-22 01:41:05,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:41:05,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:41:05,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:41:05,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:05,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:41:06,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:41:06,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:41:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:41:06,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:41:06,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:41:06,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:41:06,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:06,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:06,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:41:06,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:41:06,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:06,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:06,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:41:06,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:41:06,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:41:06,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:41:06,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:41:06,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:06,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:41:07,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:41:07,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:41:07,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:41:07,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:41:07,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:07,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:07,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:41:07,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:41:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:41:07,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:41:07,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:41:07,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:41:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:07,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:07,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:41:07,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:41:07,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:07,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:07,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:41:07,709 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-22 01:41:07,896 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 194 for LOIs [2022-11-22 01:41:08,361 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 128 for LOIs [2022-11-22 01:41:09,337 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-22 01:41:09,422 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-22 01:41:09,493 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:41:24,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [508981671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:24,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:41:24,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [16, 22, 18] total 65 [2022-11-22 01:41:24,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250827740] [2022-11-22 01:41:24,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 01:41:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 01:41:24,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3863, Unknown=1, NotChecked=0, Total=4160 [2022-11-22 01:41:24,869 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-22 01:41:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:31,506 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2022-11-22 01:41:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-22 01:41:31,507 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2022-11-22 01:41:31,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:31,508 INFO L225 Difference]: With dead ends: 88 [2022-11-22 01:41:31,508 INFO L226 Difference]: Without dead ends: 70 [2022-11-22 01:41:31,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 62 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=404, Invalid=4565, Unknown=1, NotChecked=0, Total=4970 [2022-11-22 01:41:31,512 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:31,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 117 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 01:41:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-22 01:41:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-11-22 01:41:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 01:41:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2022-11-22 01:41:31,569 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 40 [2022-11-22 01:41:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:31,570 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2022-11-22 01:41:31,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-22 01:41:31,570 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2022-11-22 01:41:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-22 01:41:31,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:31,572 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:31,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 01:41:31,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:31,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:31,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1511104578, now seen corresponding path program 1 times [2022-11-22 01:41:31,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:31,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514469244] [2022-11-22 01:41:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:31,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 01:41:34,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:34,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514469244] [2022-11-22 01:41:34,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514469244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:34,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234642614] [2022-11-22 01:41:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:34,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:34,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:34,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:34,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:41:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:34,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-22 01:41:34,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:34,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:34,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:34,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-22 01:41:34,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:34,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:41:34,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-22 01:41:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:41:46,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:53,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:41:53,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37542 treesize of output 36734 [2022-11-22 01:41:55,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:41:55,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21371 treesize of output 21301 [2022-11-22 01:44:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 01:44:32,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234642614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [956438879] [2022-11-22 01:44:32,693 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-22 01:44:32,693 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:32,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:32,694 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:32,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:32,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,763 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:44:32,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-22 01:44:32,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-22 01:44:32,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:44:32,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:44:32,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-22 01:44:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:32,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-22 01:44:33,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 01:44:33,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 01:44:33,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 01:44:33,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-22 01:44:33,557 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-22 01:44:33,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:44:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:44:33,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:44:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:44:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:44:33,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:44:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:44:33,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:33,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:44:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:44:34,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:44:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:34,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:44:34,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:44:34,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:34,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:34,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:44:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:44:34,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:44:34,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:44:34,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:34,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:44:34,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:34,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:44:34,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:44:34,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:44:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:34,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:35,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:44:35,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:44:35,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:35,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:35,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:44:35,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:44:35,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:35,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:35,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:44:35,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:44:35,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:44:35,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:44:35,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-22 01:44:35,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-22 01:44:35,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:35,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-22 01:44:35,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-22 01:44:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-22 01:44:35,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-22 01:44:35,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:44:35,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-22 01:44:35,779 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-22 01:44:35,955 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-22 01:44:36,035 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 158 for LOIs [2022-11-22 01:44:37,577 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 15 for LOIs [2022-11-22 01:44:37,583 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-22 01:44:37,648 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:54,538 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2998#(and (= |~#s_can_fail_allocator_static~0.base| 4) (= (mod __VERIFIER_assert_~cond 256) 0) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:44:54,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:44:54,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:54,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 13] total 40 [2022-11-22 01:44:54,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736738830] [2022-11-22 01:44:54,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:54,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-22 01:44:54,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-22 01:44:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=4191, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 01:44:54,542 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 20 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-22 01:45:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:00,737 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-11-22 01:45:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:45:00,738 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 20 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) Word has length 52 [2022-11-22 01:45:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:00,738 INFO L225 Difference]: With dead ends: 91 [2022-11-22 01:45:00,739 INFO L226 Difference]: Without dead ends: 84 [2022-11-22 01:45:00,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 90 SyntacticMatches, 15 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2994 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=635, Invalid=6675, Unknown=0, NotChecked=0, Total=7310 [2022-11-22 01:45:00,742 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 287 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:00,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 329 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 01:45:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-22 01:45:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2022-11-22 01:45:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 01:45:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-11-22 01:45:00,797 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 52 [2022-11-22 01:45:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:00,797 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-11-22 01:45:00,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 20 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-22 01:45:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-11-22 01:45:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-22 01:45:00,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:00,800 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:45:00,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:01,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:45:01,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:45:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2062891035, now seen corresponding path program 1 times [2022-11-22 01:45:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:01,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932903278] [2022-11-22 01:45:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 01:45:03,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:03,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932903278] [2022-11-22 01:45:03,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932903278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:03,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212493341] [2022-11-22 01:45:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:03,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:03,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:03,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:03,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b4895b-a773-4e20-ae18-50f3361a4d88/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:45:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:03,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-22 01:45:03,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:03,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:03,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:03,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:03,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-22 01:45:04,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:04,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:04,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:04,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-22 01:45:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:45:19,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:30,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10434 treesize of output 10402 [2022-11-22 01:45:30,726 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:45:30,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20863618 treesize of output 20699570