./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/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_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS --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-8393723 [2022-11-19 07:33:34,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:33:34,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:33:34,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:33:34,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:33:34,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:33:34,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:33:34,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:33:34,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:33:34,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:33:34,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:33:34,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:33:34,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:33:34,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:33:34,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:33:34,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:33:34,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:33:34,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:33:34,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:33:34,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:33:34,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:33:34,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:33:34,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:33:34,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:33:34,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:33:34,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:33:34,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:33:34,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:33:34,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:33:34,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:33:34,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:33:34,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:33:34,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:33:34,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:33:34,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:33:34,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:33:34,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:33:34,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:33:34,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:33:34,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:33:34,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:33:34,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:33:34,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:33:34,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:33:34,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:33:34,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:33:34,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:33:34,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:33:34,319 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:33:34,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:33:34,319 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:33:34,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:33:34,320 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:33:34,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:33:34,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:33:34,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:33:34,321 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:33:34,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:33:34,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:33:34,322 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:33:34,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:33:34,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:33:34,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:33:34,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:33:34,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:33:34,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:33:34,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:33:34,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:33:34,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:33:34,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:33:34,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:33:34,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:33:34,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:33:34,327 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:33:34,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:33:34,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:33:34,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:33:34,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:33:34,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:33:34,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:33:34,343 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_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d [2022-11-19 07:33:34,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:33:34,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:33:34,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:33:34,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:33:34,676 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:33:34,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-19 07:33:34,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/data/be21f6ce3/c890ac5fe33040158a0f3b5565bcb752/FLAGfa6838118 [2022-11-19 07:33:35,629 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:33:35,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-19 07:33:35,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/data/be21f6ce3/c890ac5fe33040158a0f3b5565bcb752/FLAGfa6838118 [2022-11-19 07:33:36,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/data/be21f6ce3/c890ac5fe33040158a0f3b5565bcb752 [2022-11-19 07:33:36,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:33:36,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:33:36,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:33:36,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:33:36,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:33:36,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:36" (1/1) ... [2022-11-19 07:33:36,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fef89a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:36, skipping insertion in model container [2022-11-19 07:33:36,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:36" (1/1) ... [2022-11-19 07:33:36,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:33:36,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:33:36,563 WARN L234 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_47c48763-26f3-40c0-b4fb-57d0e4ea2170/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-19 07:33:36,571 WARN L234 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_47c48763-26f3-40c0-b4fb-57d0e4ea2170/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-19 07:33:37,473 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,474 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,474 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,475 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,476 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,503 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,504 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,506 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,506 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,508 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,508 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,509 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,509 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:37,897 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:33:37,899 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:33:37,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:33:37,901 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:33:37,904 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:33:37,904 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:33:37,905 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:33:37,906 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:33:37,907 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:33:37,907 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:33:38,044 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:33:38,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:33:38,083 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:33:38,099 WARN L234 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_47c48763-26f3-40c0-b4fb-57d0e4ea2170/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-19 07:33:38,100 WARN L234 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_47c48763-26f3-40c0-b4fb-57d0e4ea2170/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-19 07:33:38,148 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,149 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,150 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,150 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,151 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,163 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,169 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,171 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,172 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,175 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,179 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,180 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,181 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:33:38,259 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:33:38,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:33:38,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:33:38,266 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:33:38,273 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:33:38,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:33:38,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:33:38,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:33:38,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:33:38,276 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:33:38,343 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:33:38,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:33:38,660 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:33:38,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38 WrapperNode [2022-11-19 07:33:38,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:33:38,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:33:38,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:33:38,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:33:38,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,811 INFO L138 Inliner]: procedures = 679, calls = 1035, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 92 [2022-11-19 07:33:38,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:33:38,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:33:38,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:33:38,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:33:38,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,875 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:33:38,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:33:38,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:33:38,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:33:38,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (1/1) ... [2022-11-19 07:33:38,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:33:38,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:33:38,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:33:38,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:33:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2022-11-19 07:33:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2022-11-19 07:33:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:33:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:33:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:33:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-19 07:33:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-19 07:33:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-19 07:33:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-19 07:33:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:33:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:33:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:33:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:33:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-11-19 07:33:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-11-19 07:33:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:33:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:33:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:33:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:33:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:33:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:33:39,323 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:33:39,339 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:33:39,653 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:33:39,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:33:39,760 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:33:39,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:39 BoogieIcfgContainer [2022-11-19 07:33:39,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:33:39,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:33:39,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:33:39,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:33:39,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:36" (1/3) ... [2022-11-19 07:33:39,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9e9fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:39, skipping insertion in model container [2022-11-19 07:33:39,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:38" (2/3) ... [2022-11-19 07:33:39,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9e9fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:39, skipping insertion in model container [2022-11-19 07:33:39,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:39" (3/3) ... [2022-11-19 07:33:39,773 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness.i [2022-11-19 07:33:39,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:33:39,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:33:39,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:33:39,855 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;@3b2c1290, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:33:39,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:33:39,860 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) [2022-11-19 07:33:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:33:39,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:39,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:39,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2020375399, now seen corresponding path program 1 times [2022-11-19 07:33:39,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:39,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600950201] [2022-11-19 07:33:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:39,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:41,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:41,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600950201] [2022-11-19 07:33:41,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600950201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:41,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:41,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:33:41,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616334634] [2022-11-19 07:33:42,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:42,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:33:42,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:33:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:33:42,048 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) [2022-11-19 07:33:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:42,400 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2022-11-19 07:33:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:42,409 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 [2022-11-19 07:33:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:42,425 INFO L225 Difference]: With dead ends: 78 [2022-11-19 07:33:42,425 INFO L226 Difference]: Without dead ends: 41 [2022-11-19 07:33:42,431 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 [2022-11-19 07:33:42,435 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 [2022-11-19 07:33:42,436 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] [2022-11-19 07:33:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-19 07:33:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-19 07:33:42,479 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) [2022-11-19 07:33:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-19 07:33:42,482 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 16 [2022-11-19 07:33:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:42,483 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-19 07:33:42,483 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) [2022-11-19 07:33:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-19 07:33:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:33:42,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:42,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:33:42,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash 538116661, now seen corresponding path program 1 times [2022-11-19 07:33:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:42,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668143643] [2022-11-19 07:33:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:42,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:42,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668143643] [2022-11-19 07:33:42,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668143643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:42,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:42,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:33:42,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853548377] [2022-11-19 07:33:42,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:42,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:33:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:33:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:33:42,652 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) [2022-11-19 07:33:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:42,892 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2022-11-19 07:33:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:42,893 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 [2022-11-19 07:33:42,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:42,895 INFO L225 Difference]: With dead ends: 79 [2022-11-19 07:33:42,895 INFO L226 Difference]: Without dead ends: 41 [2022-11-19 07:33:42,896 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 [2022-11-19 07:33:42,897 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:42,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 160 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:33:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-19 07:33:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-19 07:33:42,908 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) [2022-11-19 07:33:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-19 07:33:42,910 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 18 [2022-11-19 07:33:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:42,911 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-19 07:33:42,911 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) [2022-11-19 07:33:42,911 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-19 07:33:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:33:42,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:42,912 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] [2022-11-19 07:33:42,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:33:42,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1170184183, now seen corresponding path program 1 times [2022-11-19 07:33:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:42,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892134169] [2022-11-19 07:33:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:43,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:43,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892134169] [2022-11-19 07:33:43,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892134169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:43,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:43,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:33:43,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324005304] [2022-11-19 07:33:43,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:43,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:33:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:33:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:33:43,098 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) [2022-11-19 07:33:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:43,360 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-19 07:33:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:33:43,361 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 [2022-11-19 07:33:43,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:43,363 INFO L225 Difference]: With dead ends: 88 [2022-11-19 07:33:43,363 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 07:33:43,363 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 [2022-11-19 07:33:43,365 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 [2022-11-19 07:33:43,365 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] [2022-11-19 07:33:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 07:33:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-19 07:33:43,375 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) [2022-11-19 07:33:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-19 07:33:43,376 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 20 [2022-11-19 07:33:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:43,377 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-19 07:33:43,377 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) [2022-11-19 07:33:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-19 07:33:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:33:43,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:43,378 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] [2022-11-19 07:33:43,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:33:43,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302219, now seen corresponding path program 1 times [2022-11-19 07:33:43,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:43,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144218938] [2022-11-19 07:33:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:43,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:43,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144218938] [2022-11-19 07:33:43,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144218938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:43,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:43,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:33:43,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225294224] [2022-11-19 07:33:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:43,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:33:43,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:33:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:33:43,643 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) [2022-11-19 07:33:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:43,954 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2022-11-19 07:33:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:33:43,955 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 [2022-11-19 07:33:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:43,956 INFO L225 Difference]: With dead ends: 88 [2022-11-19 07:33:43,957 INFO L226 Difference]: Without dead ends: 48 [2022-11-19 07:33:43,957 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 [2022-11-19 07:33:43,959 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 54 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-19 07:33:43,961 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] [2022-11-19 07:33:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-19 07:33:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-11-19 07:33:43,977 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) [2022-11-19 07:33:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-19 07:33:43,982 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 21 [2022-11-19 07:33:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:43,982 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-19 07:33:43,982 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) [2022-11-19 07:33:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-19 07:33:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:33:43,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:43,984 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] [2022-11-19 07:33:43,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:33:43,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1961749134, now seen corresponding path program 1 times [2022-11-19 07:33:43,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:43,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146197611] [2022-11-19 07:33:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:45,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:45,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146197611] [2022-11-19 07:33:45,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146197611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:45,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:45,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-19 07:33:45,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940708484] [2022-11-19 07:33:45,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:45,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:33:45,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:45,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:33:45,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:33:45,455 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) [2022-11-19 07:33:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:46,048 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2022-11-19 07:33:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:33:46,049 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 [2022-11-19 07:33:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:46,050 INFO L225 Difference]: With dead ends: 85 [2022-11-19 07:33:46,050 INFO L226 Difference]: Without dead ends: 48 [2022-11-19 07:33:46,050 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 [2022-11-19 07:33:46,051 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:46,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 199 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:33:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-19 07:33:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-11-19 07:33:46,062 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) [2022-11-19 07:33:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-19 07:33:46,062 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 24 [2022-11-19 07:33:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:46,063 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-19 07:33:46,063 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) [2022-11-19 07:33:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-19 07:33:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:33:46,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:46,064 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] [2022-11-19 07:33:46,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:33:46,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:46,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:46,065 INFO L85 PathProgramCache]: Analyzing trace with hash -314126348, now seen corresponding path program 1 times [2022-11-19 07:33:46,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:46,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504030239] [2022-11-19 07:33:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:46,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:46,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:46,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504030239] [2022-11-19 07:33:46,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504030239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:33:46,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468481144] [2022-11-19 07:33:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:46,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:33:46,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:33:46,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:33:46,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:33:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:46,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-19 07:33:46,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:50,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:33:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:51,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468481144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:33:51,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212761901] [2022-11-19 07:33:51,336 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 07:33:51,336 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:33:51,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:33:51,346 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:33:51,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:33:51,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,471 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 07:33:51,472 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 [2022-11-19 07:33:51,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,545 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:33:51,545 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 [2022-11-19 07:33:51,580 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-19 07:33:51,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,904 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 [2022-11-19 07:33:51,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,930 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 [2022-11-19 07:33:51,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,959 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 [2022-11-19 07:33:51,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:51,999 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 [2022-11-19 07:33:52,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,489 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 [2022-11-19 07:33:52,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,520 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 [2022-11-19 07:33:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,549 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 [2022-11-19 07:33:52,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,578 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 [2022-11-19 07:33:52,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,724 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 [2022-11-19 07:33:52,765 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 [2022-11-19 07:33:52,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,794 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 [2022-11-19 07:33:52,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,826 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 [2022-11-19 07:33:52,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,898 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 [2022-11-19 07:33:52,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,924 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 [2022-11-19 07:33:52,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,946 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 [2022-11-19 07:33:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:52,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:53,001 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 [2022-11-19 07:33:53,046 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 131 for LOIs [2022-11-19 07:33:53,165 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 133 for LOIs [2022-11-19 07:33:54,378 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 107 for LOIs [2022-11-19 07:33:54,400 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-19 07:33:54,481 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:34:03,577 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 [2022-11-19 07:34:03,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:34:03,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:34:03,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 22 [2022-11-19 07:34:03,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603386315] [2022-11-19 07:34:03,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:34:03,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 07:34:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 07:34:03,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-11-19 07:34:03,580 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) [2022-11-19 07:34:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:04,052 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2022-11-19 07:34:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:34:04,053 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 [2022-11-19 07:34:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:04,057 INFO L225 Difference]: With dead ends: 91 [2022-11-19 07:34:04,057 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 07:34:04,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2022-11-19 07:34:04,061 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:04,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 264 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-11-19 07:34:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 07:34:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-11-19 07:34:04,092 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) [2022-11-19 07:34:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-11-19 07:34:04,095 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 26 [2022-11-19 07:34:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:04,096 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-11-19 07:34:04,097 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) [2022-11-19 07:34:04,097 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-11-19 07:34:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:34:04,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:04,098 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] [2022-11-19 07:34:04,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:04,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:34:04,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash -694288424, now seen corresponding path program 1 times [2022-11-19 07:34:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:04,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143672821] [2022-11-19 07:34:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:04,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:34:04,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:04,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143672821] [2022-11-19 07:34:04,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143672821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:04,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:04,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:34:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038946030] [2022-11-19 07:34:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:34:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:34:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:34:04,488 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) [2022-11-19 07:34:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:04,609 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-11-19 07:34:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:34:04,610 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 [2022-11-19 07:34:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:04,611 INFO L225 Difference]: With dead ends: 61 [2022-11-19 07:34:04,611 INFO L226 Difference]: Without dead ends: 59 [2022-11-19 07:34:04,611 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 [2022-11-19 07:34:04,612 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 [2022-11-19 07:34:04,612 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] [2022-11-19 07:34:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-19 07:34:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-19 07:34:04,626 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) [2022-11-19 07:34:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-11-19 07:34:04,627 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 27 [2022-11-19 07:34:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:04,627 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-11-19 07:34:04,628 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) [2022-11-19 07:34:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-11-19 07:34:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:34:04,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:04,629 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] [2022-11-19 07:34:04,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:34:04,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash 739444463, now seen corresponding path program 1 times [2022-11-19 07:34:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:04,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422894144] [2022-11-19 07:34:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:34:05,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:05,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422894144] [2022-11-19 07:34:05,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422894144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:34:05,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659143776] [2022-11-19 07:34:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:05,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:34:05,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:34:05,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:34:05,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:34:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:05,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 07:34:05,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:05,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:05,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:05,786 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 [2022-11-19 07:34:05,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:05,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:05,799 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 [2022-11-19 07:34:28,367 WARN L233 SmtUtils]: Spent 10.04s 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) [2022-11-19 07:34:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:28,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:34:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:34:29,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659143776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:34:29,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152122887] [2022-11-19 07:34:29,179 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-19 07:34:29,179 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:34:29,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:34:29,180 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:34:29,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:34:29,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,255 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 07:34:29,256 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 [2022-11-19 07:34:29,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,338 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:34:29,338 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 [2022-11-19 07:34:29,371 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-19 07:34:29,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,653 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 [2022-11-19 07:34:29,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,677 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 [2022-11-19 07:34:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,697 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 [2022-11-19 07:34:29,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:29,723 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 [2022-11-19 07:34:30,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,106 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 [2022-11-19 07:34:30,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,131 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 [2022-11-19 07:34:30,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,148 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 [2022-11-19 07:34:30,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,170 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 [2022-11-19 07:34:30,301 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 [2022-11-19 07:34:30,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,325 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 [2022-11-19 07:34:30,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,347 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 [2022-11-19 07:34:30,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,367 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 [2022-11-19 07:34:30,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,427 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 [2022-11-19 07:34:30,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,444 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 [2022-11-19 07:34:30,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,461 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 [2022-11-19 07:34:30,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:30,487 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 [2022-11-19 07:34:30,522 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 130 for LOIs [2022-11-19 07:34:30,609 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 133 for LOIs [2022-11-19 07:34:31,612 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 107 for LOIs [2022-11-19 07:34:31,637 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-19 07:34:31,708 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:34:39,021 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1816#(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 [2022-11-19 07:34:39,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:34:39,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:34:39,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8] total 25 [2022-11-19 07:34:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126323851] [2022-11-19 07:34:39,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:34:39,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:34:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:34:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1699, Unknown=6, NotChecked=0, Total=1892 [2022-11-19 07:34:39,027 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) [2022-11-19 07:34:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:43,724 INFO L93 Difference]: Finished difference Result 134 states and 153 transitions. [2022-11-19 07:34:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-19 07:34:43,725 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 [2022-11-19 07:34:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:43,726 INFO L225 Difference]: With dead ends: 134 [2022-11-19 07:34:43,726 INFO L226 Difference]: Without dead ends: 79 [2022-11-19 07:34:43,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=223, Invalid=2122, Unknown=7, NotChecked=0, Total=2352 [2022-11-19 07:34:43,730 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 72 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:43,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 345 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 263 Invalid, 0 Unknown, 89 Unchecked, 0.4s Time] [2022-11-19 07:34:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-19 07:34:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2022-11-19 07:34:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 14 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2022-11-19 07:34:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-19 07:34:43,754 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 30 [2022-11-19 07:34:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:43,755 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-19 07:34:43,755 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) [2022-11-19 07:34:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-19 07:34:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 07:34:43,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:43,756 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 07:34:43,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:34:43,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1372673585, now seen corresponding path program 2 times [2022-11-19 07:34:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:43,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796120258] [2022-11-19 07:34:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:43,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:34:45,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:45,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796120258] [2022-11-19 07:34:45,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796120258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:34:45,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399471208] [2022-11-19 07:34:45,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:34:45,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:34:45,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:34:45,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:34:45,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:34:45,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:34:45,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:34:45,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 07:34:45,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:34:46,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:34:46,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399471208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:46,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:34:46,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-11-19 07:34:46,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987346547] [2022-11-19 07:34:46,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:46,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:34:46,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:34:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:34:46,228 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 07:34:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:46,329 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2022-11-19 07:34:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:34:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2022-11-19 07:34:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:46,331 INFO L225 Difference]: With dead ends: 115 [2022-11-19 07:34:46,331 INFO L226 Difference]: Without dead ends: 68 [2022-11-19 07:34:46,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:34:46,333 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:46,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-11-19 07:34:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-19 07:34:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2022-11-19 07:34:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.125) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-19 07:34:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2022-11-19 07:34:46,351 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 32 [2022-11-19 07:34:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:46,352 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2022-11-19 07:34:46,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 07:34:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2022-11-19 07:34:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 07:34:46,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:46,354 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] [2022-11-19 07:34:46,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 07:34:46,560 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1842443058, now seen corresponding path program 1 times [2022-11-19 07:34:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:46,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701384236] [2022-11-19 07:34:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:34:47,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:47,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701384236] [2022-11-19 07:34:47,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701384236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:34:47,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954682964] [2022-11-19 07:34:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:47,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:34:47,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:34:47,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:34:47,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:34:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:47,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-19 07:34:47,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:49,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:35:01,870 WARN L233 SmtUtils]: Spent 10.03s 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) [2022-11-19 07:35:12,092 WARN L233 SmtUtils]: Spent 10.02s 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) [2022-11-19 07:35:16,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:35:16,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 73 [2022-11-19 07:35:16,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:35:16,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 71 [2022-11-19 07:35:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:35:16,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954682964] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:35:16,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1352361695] [2022-11-19 07:35:16,726 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-19 07:35:16,727 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:35:16,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:35:16,728 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:35:16,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:35:16,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:16,808 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:35:16,809 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 [2022-11-19 07:35:16,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:16,828 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 [2022-11-19 07:35:16,853 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-19 07:35:17,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,149 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 [2022-11-19 07:35:17,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,174 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 [2022-11-19 07:35:17,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,195 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 [2022-11-19 07:35:17,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,220 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 [2022-11-19 07:35:17,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,619 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 [2022-11-19 07:35:17,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,645 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 [2022-11-19 07:35:17,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,678 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 [2022-11-19 07:35:17,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,705 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 [2022-11-19 07:35:17,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,854 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 [2022-11-19 07:35:17,880 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 [2022-11-19 07:35:17,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,905 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 [2022-11-19 07:35:17,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:17,929 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 [2022-11-19 07:35:18,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,036 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 [2022-11-19 07:35:18,061 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 [2022-11-19 07:35:18,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,087 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 [2022-11-19 07:35:18,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,108 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 [2022-11-19 07:35:18,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,290 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 [2022-11-19 07:35:18,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,313 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 [2022-11-19 07:35:18,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,336 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 [2022-11-19 07:35:18,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,364 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 [2022-11-19 07:35:18,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,457 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 [2022-11-19 07:35:18,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,475 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 [2022-11-19 07:35:18,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,501 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 [2022-11-19 07:35:18,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,532 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 [2022-11-19 07:35:18,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,649 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 [2022-11-19 07:35:18,671 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 [2022-11-19 07:35:18,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,722 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 [2022-11-19 07:35:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,766 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 [2022-11-19 07:35:18,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,828 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 [2022-11-19 07:35:18,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,852 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 [2022-11-19 07:35:18,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,872 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 [2022-11-19 07:35:18,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,894 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 [2022-11-19 07:35:18,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,952 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 [2022-11-19 07:35:18,975 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 [2022-11-19 07:35:18,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:18,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,000 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 [2022-11-19 07:35:19,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,020 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 [2022-11-19 07:35:19,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,108 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 [2022-11-19 07:35:19,119 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 [2022-11-19 07:35:19,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,135 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 [2022-11-19 07:35:19,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:19,157 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 [2022-11-19 07:35:19,188 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-19 07:35:19,373 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 194 for LOIs [2022-11-19 07:35:19,738 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 128 for LOIs [2022-11-19 07:35:20,706 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-19 07:35:20,820 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-19 07:35:20,900 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:35:36,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1352361695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:36,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:35:36,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [16, 22, 19] total 70 [2022-11-19 07:35:36,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34280643] [2022-11-19 07:35:36,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:36,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-19 07:35:36,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-19 07:35:36,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=4493, Unknown=1, NotChecked=0, Total=4830 [2022-11-19 07:35:36,437 INFO L87 Difference]: Start difference. First operand 63 states and 69 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) [2022-11-19 07:35:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:40,983 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-11-19 07:35:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-19 07:35:40,983 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 [2022-11-19 07:35:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:40,985 INFO L225 Difference]: With dead ends: 80 [2022-11-19 07:35:40,985 INFO L226 Difference]: Without dead ends: 73 [2022-11-19 07:35:40,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=450, Invalid=5249, Unknown=1, NotChecked=0, Total=5700 [2022-11-19 07:35:40,989 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:40,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 150 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 325 Invalid, 0 Unknown, 228 Unchecked, 0.9s Time] [2022-11-19 07:35:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-19 07:35:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2022-11-19 07:35:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 46 states have internal predecessors, (50), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 07:35:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-19 07:35:41,050 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 40 [2022-11-19 07:35:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:41,051 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-19 07:35:41,051 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) [2022-11-19 07:35:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-19 07:35:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 07:35:41,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:41,059 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] [2022-11-19 07:35:41,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:41,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:35:41,266 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:41,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:41,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1511104578, now seen corresponding path program 1 times [2022-11-19 07:35:41,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:41,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821090013] [2022-11-19 07:35:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:41,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:35:44,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821090013] [2022-11-19 07:35:44,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821090013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:35:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900820792] [2022-11-19 07:35:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:44,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:35:44,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:44,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:35:44,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:35:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:44,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-19 07:35:44,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:44,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:44,699 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 [2022-11-19 07:35:44,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:44,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:44,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:35:44,708 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 [2022-11-19 07:35:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:35:57,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:04,427 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:36:04,428 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 10940 treesize of output 10726 [2022-11-19 07:36:04,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:36:04,925 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 14437 treesize of output 14301 [2022-11-19 07:36:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:36:12,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900820792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:36:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [125834894] [2022-11-19 07:36:12,977 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-19 07:36:12,977 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:36:12,977 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:36:12,978 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:36:12,978 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:36:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,043 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:36:13,044 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 [2022-11-19 07:36:13,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,061 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 [2022-11-19 07:36:13,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,102 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 [2022-11-19 07:36:13,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,123 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 [2022-11-19 07:36:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,145 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 [2022-11-19 07:36:13,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,157 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 [2022-11-19 07:36:13,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,590 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 [2022-11-19 07:36:13,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,612 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 [2022-11-19 07:36:13,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,663 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 [2022-11-19 07:36:13,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:13,685 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 [2022-11-19 07:36:13,854 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-19 07:36:14,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,075 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 [2022-11-19 07:36:14,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,111 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 70 treesize of output 93 [2022-11-19 07:36:14,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,131 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 [2022-11-19 07:36:14,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,152 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 [2022-11-19 07:36:14,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,233 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 [2022-11-19 07:36:14,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,247 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 [2022-11-19 07:36:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,267 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 [2022-11-19 07:36:14,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,291 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 [2022-11-19 07:36:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,411 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 [2022-11-19 07:36:14,431 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 [2022-11-19 07:36:14,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,453 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 [2022-11-19 07:36:14,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,472 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 [2022-11-19 07:36:14,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,562 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 [2022-11-19 07:36:14,586 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 [2022-11-19 07:36:14,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,611 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 [2022-11-19 07:36:14,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,637 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 [2022-11-19 07:36:14,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,771 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 [2022-11-19 07:36:14,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,787 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 [2022-11-19 07:36:14,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,806 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 [2022-11-19 07:36:14,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,829 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 [2022-11-19 07:36:14,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,896 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 64 treesize of output 87 [2022-11-19 07:36:14,910 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 [2022-11-19 07:36:14,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,930 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 [2022-11-19 07:36:14,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:14,950 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 [2022-11-19 07:36:15,070 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 [2022-11-19 07:36:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,092 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 [2022-11-19 07:36:15,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,135 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 [2022-11-19 07:36:15,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,167 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 [2022-11-19 07:36:15,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,258 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 [2022-11-19 07:36:15,288 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 [2022-11-19 07:36:15,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,325 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 [2022-11-19 07:36:15,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,373 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 [2022-11-19 07:36:15,511 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 [2022-11-19 07:36:15,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,533 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 [2022-11-19 07:36:15,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,573 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 [2022-11-19 07:36:15,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,607 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 [2022-11-19 07:36:15,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,669 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 [2022-11-19 07:36:15,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,699 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 [2022-11-19 07:36:15,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,716 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 [2022-11-19 07:36:15,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,736 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 [2022-11-19 07:36:15,776 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 [2022-11-19 07:36:15,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,795 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 [2022-11-19 07:36:15,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,819 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 [2022-11-19 07:36:15,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,837 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 [2022-11-19 07:36:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,913 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 70 treesize of output 93 [2022-11-19 07:36:15,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,933 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 [2022-11-19 07:36:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,955 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 [2022-11-19 07:36:15,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:15,977 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 [2022-11-19 07:36:16,017 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-19 07:36:16,159 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-19 07:36:16,228 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 158 for LOIs [2022-11-19 07:36:18,050 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 15 for LOIs [2022-11-19 07:36:18,055 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-19 07:36:18,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:36:34,520 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3384#(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 [2022-11-19 07:36:34,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:36:34,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:36:34,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 13] total 38 [2022-11-19 07:36:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632220963] [2022-11-19 07:36:34,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:36:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-19 07:36:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-19 07:36:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3941, Unknown=0, NotChecked=0, Total=4290 [2022-11-19 07:36:34,524 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 38 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 33 states have internal predecessors, (70), 18 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 14 states have call predecessors, (25), 17 states have call successors, (25) [2022-11-19 07:36:51,806 WARN L233 SmtUtils]: Spent 15.43s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:54,453 INFO L93 Difference]: Finished difference Result 167 states and 189 transitions. [2022-11-19 07:36:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-19 07:36:54,454 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 33 states have internal predecessors, (70), 18 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 14 states have call predecessors, (25), 17 states have call successors, (25) Word has length 52 [2022-11-19 07:36:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:54,456 INFO L225 Difference]: With dead ends: 167 [2022-11-19 07:36:54,456 INFO L226 Difference]: Without dead ends: 160 [2022-11-19 07:36:54,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 92 SyntacticMatches, 16 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2878 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=536, Invalid=6270, Unknown=0, NotChecked=0, Total=6806 [2022-11-19 07:36:54,458 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 174 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:54,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 650 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 685 Invalid, 0 Unknown, 178 Unchecked, 1.1s Time] [2022-11-19 07:36:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-19 07:36:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 110. [2022-11-19 07:36:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 74 states have internal predecessors, (78), 20 states have call successors, (20), 17 states have call predecessors, (20), 18 states have return successors, (21), 18 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-19 07:36:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 119 transitions. [2022-11-19 07:36:54,508 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 119 transitions. Word has length 52 [2022-11-19 07:36:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:54,508 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 119 transitions. [2022-11-19 07:36:54,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 33 states have internal predecessors, (70), 18 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 14 states have call predecessors, (25), 17 states have call successors, (25) [2022-11-19 07:36:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 119 transitions. [2022-11-19 07:36:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 07:36:54,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:54,510 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2022-11-19 07:36:54,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:54,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:54,713 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:54,713 INFO L85 PathProgramCache]: Analyzing trace with hash -583949249, now seen corresponding path program 2 times [2022-11-19 07:36:54,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:54,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343618898] [2022-11-19 07:36:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:54,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:36:55,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:55,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343618898] [2022-11-19 07:36:55,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343618898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:55,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024732999] [2022-11-19 07:36:55,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:36:55,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:55,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:55,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:55,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:36:55,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:36:55,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:36:55,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-19 07:36:55,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:55,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:55,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:55,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:55,974 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 [2022-11-19 07:36:55,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:55,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:55,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:36:55,984 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 [2022-11-19 07:37:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:37:21,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:27,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:37:27,445 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 7592 treesize of output 7444 [2022-11-19 07:37:27,950 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:37:27,951 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 19548 treesize of output 19228 [2022-11-19 07:37:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 07:37:29,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024732999] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:29,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109079477] [2022-11-19 07:37:29,682 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-19 07:37:29,682 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:37:29,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:37:29,683 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:37:29,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:37:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,738 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 07:37:29,738 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 [2022-11-19 07:37:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,798 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:37:29,798 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 [2022-11-19 07:37:29,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,856 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 [2022-11-19 07:37:29,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,877 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 [2022-11-19 07:37:29,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,888 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 [2022-11-19 07:37:29,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:29,900 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 [2022-11-19 07:37:30,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,379 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 [2022-11-19 07:37:30,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,404 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 [2022-11-19 07:37:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,463 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 [2022-11-19 07:37:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,485 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 [2022-11-19 07:37:30,610 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-19 07:37:30,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,827 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 [2022-11-19 07:37:30,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,842 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 [2022-11-19 07:37:30,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,861 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 [2022-11-19 07:37:30,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,885 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 [2022-11-19 07:37:30,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:30,974 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 [2022-11-19 07:37:30,991 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 [2022-11-19 07:37:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,007 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 [2022-11-19 07:37:31,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,026 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 [2022-11-19 07:37:31,173 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 [2022-11-19 07:37:31,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,192 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 [2022-11-19 07:37:31,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,214 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 [2022-11-19 07:37:31,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,231 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 [2022-11-19 07:37:31,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,315 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 [2022-11-19 07:37:31,336 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 [2022-11-19 07:37:31,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,357 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 [2022-11-19 07:37:31,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,386 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 [2022-11-19 07:37:31,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,529 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 [2022-11-19 07:37:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,557 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 [2022-11-19 07:37:31,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,577 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 [2022-11-19 07:37:31,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,594 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 [2022-11-19 07:37:31,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,658 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 [2022-11-19 07:37:31,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,679 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 [2022-11-19 07:37:31,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,696 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 [2022-11-19 07:37:31,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,721 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 [2022-11-19 07:37:31,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,848 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 [2022-11-19 07:37:31,868 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 [2022-11-19 07:37:31,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,909 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 [2022-11-19 07:37:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:31,941 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 [2022-11-19 07:37:32,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,032 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 [2022-11-19 07:37:32,059 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 [2022-11-19 07:37:32,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,105 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 [2022-11-19 07:37:32,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,145 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 [2022-11-19 07:37:32,286 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 [2022-11-19 07:37:32,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,313 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 [2022-11-19 07:37:32,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,363 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 [2022-11-19 07:37:32,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,405 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 [2022-11-19 07:37:32,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,483 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 [2022-11-19 07:37:32,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,502 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 [2022-11-19 07:37:32,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,524 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 [2022-11-19 07:37:32,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,548 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 [2022-11-19 07:37:32,594 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 [2022-11-19 07:37:32,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,617 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 [2022-11-19 07:37:32,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,640 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 [2022-11-19 07:37:32,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,661 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 [2022-11-19 07:37:32,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,724 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 [2022-11-19 07:37:32,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,745 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 [2022-11-19 07:37:32,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,761 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 [2022-11-19 07:37:32,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:32,781 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 [2022-11-19 07:37:32,826 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-19 07:37:32,975 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-19 07:37:33,054 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 178 for LOIs [2022-11-19 07:37:34,603 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 15 for LOIs [2022-11-19 07:37:34,608 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-19 07:37:34,676 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:37:53,098 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4219#(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 [2022-11-19 07:37:53,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:37:53,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:37:53,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 10] total 32 [2022-11-19 07:37:53,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334656211] [2022-11-19 07:37:53,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:37:53,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-19 07:37:53,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:37:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-19 07:37:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=3251, Unknown=0, NotChecked=0, Total=3540 [2022-11-19 07:37:53,102 INFO L87 Difference]: Start difference. First operand 110 states and 119 transitions. Second operand has 32 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 27 states have internal predecessors, (65), 18 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (27), 13 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-19 07:37:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:37:57,731 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2022-11-19 07:37:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 07:37:57,732 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 27 states have internal predecessors, (65), 18 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (27), 13 states have call predecessors, (27), 18 states have call successors, (27) Word has length 58 [2022-11-19 07:37:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:37:57,733 INFO L225 Difference]: With dead ends: 188 [2022-11-19 07:37:57,733 INFO L226 Difference]: Without dead ends: 155 [2022-11-19 07:37:57,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 19 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 40.7s TimeCoverageRelationStatistics Valid=415, Invalid=4841, Unknown=0, NotChecked=0, Total=5256 [2022-11-19 07:37:57,736 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 62 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:37:57,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 543 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 497 Invalid, 0 Unknown, 167 Unchecked, 0.6s Time] [2022-11-19 07:37:57,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-19 07:37:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 115. [2022-11-19 07:37:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 75 states have (on average 1.08) internal successors, (81), 77 states have internal predecessors, (81), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-19 07:37:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2022-11-19 07:37:57,839 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 58 [2022-11-19 07:37:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:37:57,839 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2022-11-19 07:37:57,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 27 states have internal predecessors, (65), 18 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (27), 13 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-19 07:37:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2022-11-19 07:37:57,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:37:57,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:37:57,841 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] [2022-11-19 07:37:57,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:37:58,047 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:37:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:37:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2062891035, now seen corresponding path program 1 times [2022-11-19 07:37:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:37:58,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507476449] [2022-11-19 07:37:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:37:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:38:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:38:01,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:38:01,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507476449] [2022-11-19 07:38:01,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507476449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:38:01,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944707037] [2022-11-19 07:38:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:38:01,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:38:01,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:38:01,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:38:01,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:38:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:38:01,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-19 07:38:01,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:38:01,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:01,641 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 [2022-11-19 07:38:01,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:01,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:01,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:01,652 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 [2022-11-19 07:38:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:38:06,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:38:20,308 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 12971 treesize of output 12779 [2022-11-19 07:38:20,445 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 1647 treesize of output 1623 [2022-11-19 07:39:19,028 WARN L233 SmtUtils]: Spent 57.19s on a formula simplification. DAG size of input: 64 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:21,594 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| Int)) (or (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|) 0) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| Int)) (= (select (select |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|)) (+ 8 (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|))) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|)) (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| 0))) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| Int)) (or (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| 0) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| Int)) (or (not (= 0 (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|))) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|) 0)))))) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| Int)) (or (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| 0) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| Int)) (= (select (select |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|)) (+ 8 (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|))) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|)))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| Int)) (or (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|) 0) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| Int)) (or (not (= 0 (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|))) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|) 0)))) (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| 0))) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| Int)) (or (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| Int)) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|)) (+ 8 (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|))))) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| 0))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| Int)) (or (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|) 0) (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103| 0) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| Int)) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103| (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|)) (+ 8 (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_103|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_103|)))))))) (not (= (mod |c___VERIFIER_assert_#in~cond| 256) 0)) (= (mod c___VERIFIER_assert_~cond 256) 0)) is different from false [2022-11-19 07:39:25,014 WARN L837 $PredicateComparison]: unable to prove that (or (= (mod |c_aws_linked_list_empty_#res| 256) 0) (and (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (or (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (or (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0)))) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| 0))) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (or (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (= (select (select |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|)) (+ (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 8)) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|)) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| 0))) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (or (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| 0) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|)) (+ (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 8)) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|)))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (or (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0) (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| 0) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (or (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0)))))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (or (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (or (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0)) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| 0) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0)))) (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (or (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|)) (+ (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 8)) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|)) (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| 0))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (or (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (or (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| 0) (= (select (select |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|)) (+ (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 8)) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|))) (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (or (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (or (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| 0) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|)) (+ (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 8)) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|))))) (forall ((|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| Int)) (or (= (+ 16 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 0) (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104| 0) (forall ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104| Int)) (= (select (select |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|)) (+ (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_104|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|) 8)) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_104|))))) (and (= (+ 16 |c_aws_linked_list_empty_#in~list.offset|) (select (select |c_#memory_$Pointer$.offset| |c_aws_linked_list_empty_#in~list.base|) |c_aws_linked_list_empty_#in~list.offset|)) (= |c_aws_linked_list_empty_#in~list.base| (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_empty_#in~list.base|) |c_aws_linked_list_empty_#in~list.offset|)))) is different from false [2022-11-19 07:40:25,076 WARN L233 SmtUtils]: Spent 59.15s on a formula simplification. DAG size of input: 80 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:25,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944707037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:40:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1354718936] [2022-11-19 07:40:25,338 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-19 07:40:25,338 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:40:25,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:40:25,339 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:40:25,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:40:25,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,576 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 07:40:25,578 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 [2022-11-19 07:40:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,833 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:40:25,834 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 [2022-11-19 07:40:25,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,927 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 [2022-11-19 07:40:25,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,974 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 [2022-11-19 07:40:25,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:25,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,022 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 [2022-11-19 07:40:26,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,056 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 [2022-11-19 07:40:26,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,585 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 [2022-11-19 07:40:26,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,632 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 [2022-11-19 07:40:26,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,705 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 [2022-11-19 07:40:26,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:26,746 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 [2022-11-19 07:40:27,032 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-19 07:40:27,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,306 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 [2022-11-19 07:40:27,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,341 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 [2022-11-19 07:40:27,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,370 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 [2022-11-19 07:40:27,392 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 [2022-11-19 07:40:27,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,538 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 [2022-11-19 07:40:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,601 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 [2022-11-19 07:40:27,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,668 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 [2022-11-19 07:40:27,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:27,714 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 [2022-11-19 07:40:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,404 INFO L321 Elim1Store]: treesize reduction 72, result has 32.7 percent of original size [2022-11-19 07:40:28,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 673 treesize of output 647 [2022-11-19 07:40:28,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 623 treesize of output 654 [2022-11-19 07:40:28,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,588 INFO L321 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2022-11-19 07:40:28,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 565 treesize of output 601 [2022-11-19 07:40:28,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:28,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:28,830 INFO L321 Elim1Store]: treesize reduction 70, result has 33.3 percent of original size [2022-11-19 07:40:28,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 507 treesize of output 483 [2022-11-19 07:40:29,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:29,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-19 07:40:29,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:29,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:29,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2022-11-19 07:40:29,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:29,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:29,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:29,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:29,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:29,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:29,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:29,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:29,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:29,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:30,137 INFO L321 Elim1Store]: treesize reduction 72, result has 32.7 percent of original size [2022-11-19 07:40:30,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 673 treesize of output 647 [2022-11-19 07:40:30,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 623 treesize of output 654 [2022-11-19 07:40:30,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:30,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,384 INFO L321 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2022-11-19 07:40:30,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 565 treesize of output 601 [2022-11-19 07:40:30,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:30,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:30,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:30,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:30,678 INFO L321 Elim1Store]: treesize reduction 70, result has 33.3 percent of original size [2022-11-19 07:40:30,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 507 treesize of output 483 [2022-11-19 07:40:31,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-19 07:40:31,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:31,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2022-11-19 07:40:31,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:31,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,689 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 [2022-11-19 07:40:31,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,750 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 [2022-11-19 07:40:31,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,806 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 [2022-11-19 07:40:31,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,868 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 [2022-11-19 07:40:31,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:31,980 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 [2022-11-19 07:40:32,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,043 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 [2022-11-19 07:40:32,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,092 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 [2022-11-19 07:40:32,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,131 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 [2022-11-19 07:40:32,264 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 [2022-11-19 07:40:32,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,295 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 [2022-11-19 07:40:32,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,473 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 [2022-11-19 07:40:32,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,616 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 [2022-11-19 07:40:32,731 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 [2022-11-19 07:40:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,762 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 [2022-11-19 07:40:32,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,916 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 [2022-11-19 07:40:32,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:32,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,073 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 [2022-11-19 07:40:33,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,237 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 [2022-11-19 07:40:33,267 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 [2022-11-19 07:40:33,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,414 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 [2022-11-19 07:40:33,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,582 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 [2022-11-19 07:40:33,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,663 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 [2022-11-19 07:40:33,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,697 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 [2022-11-19 07:40:33,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,747 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 [2022-11-19 07:40:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,801 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 [2022-11-19 07:40:33,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 673 treesize of output 704 [2022-11-19 07:40:33,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:33,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:33,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,017 INFO L321 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2022-11-19 07:40:34,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 615 treesize of output 651 [2022-11-19 07:40:34,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,274 INFO L321 Elim1Store]: treesize reduction 70, result has 33.3 percent of original size [2022-11-19 07:40:34,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 557 treesize of output 533 [2022-11-19 07:40:34,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:34,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:40:34,488 INFO L321 Elim1Store]: treesize reduction 72, result has 32.7 percent of original size [2022-11-19 07:40:34,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 511 treesize of output 485 [2022-11-19 07:40:34,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:34,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-19 07:40:34,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:35,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2022-11-19 07:40:35,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:40:35,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,224 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 [2022-11-19 07:40:35,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,271 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 [2022-11-19 07:40:35,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,318 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 [2022-11-19 07:40:35,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:40:35,368 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 [2022-11-19 07:40:35,426 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-19 07:40:35,606 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-19 07:40:35,679 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2022-11-19 07:40:35,708 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 158 for LOIs [2022-11-19 07:40:37,446 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-19 07:40:37,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:41:11,882 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 188 DAG size of output: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:32,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5039#(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) (<= 0 ~tl_last_error~0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:41:32,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:41:32,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:41:32,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 30] total 47 [2022-11-19 07:41:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001922101] [2022-11-19 07:41:32,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:41:32,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-19 07:41:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:41:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-19 07:41:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=7215, Unknown=3, NotChecked=346, Total=8010 [2022-11-19 07:41:32,602 INFO L87 Difference]: Start difference. First operand 115 states and 122 transitions. Second operand has 47 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 39 states have internal predecessors, (64), 19 states have call successors, (20), 5 states have call predecessors, (20), 14 states have return successors, (19), 16 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-19 07:41:41,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:41:41,396 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2022-11-19 07:41:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-19 07:41:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 39 states have internal predecessors, (64), 19 states have call successors, (20), 5 states have call predecessors, (20), 14 states have return successors, (19), 16 states have call predecessors, (19), 18 states have call successors, (19) Word has length 60 [2022-11-19 07:41:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:41:41,398 INFO L225 Difference]: With dead ends: 142 [2022-11-19 07:41:41,398 INFO L226 Difference]: Without dead ends: 134 [2022-11-19 07:41:41,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 74 SyntacticMatches, 12 SemanticMatches, 107 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4157 ImplicationChecksByTransitivity, 189.8s TimeCoverageRelationStatistics Valid=638, Invalid=10709, Unknown=3, NotChecked=422, Total=11772 [2022-11-19 07:41:41,400 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:41:41,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 442 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 315 Invalid, 0 Unknown, 217 Unchecked, 1.3s Time] [2022-11-19 07:41:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-19 07:41:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2022-11-19 07:41:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 77 states have internal predecessors, (82), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-19 07:41:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2022-11-19 07:41:41,463 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 60 [2022-11-19 07:41:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:41:41,463 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2022-11-19 07:41:41,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 39 states have internal predecessors, (64), 19 states have call successors, (20), 5 states have call predecessors, (20), 14 states have return successors, (19), 16 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-19 07:41:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2022-11-19 07:41:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 07:41:41,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:41,465 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 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] [2022-11-19 07:41:41,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:41:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:41:41,665 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:41:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1469852145, now seen corresponding path program 1 times [2022-11-19 07:41:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:41,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820416141] [2022-11-19 07:41:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 07:41:42,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:42,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820416141] [2022-11-19 07:41:42,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820416141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:41:42,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:41:42,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:41:42,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454528919] [2022-11-19 07:41:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:41:42,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:41:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:41:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:41:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:41:42,069 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 07:41:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:41:42,527 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2022-11-19 07:41:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:41:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 63 [2022-11-19 07:41:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:41:42,528 INFO L225 Difference]: With dead ends: 127 [2022-11-19 07:41:42,529 INFO L226 Difference]: Without dead ends: 114 [2022-11-19 07:41:42,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:41:42,530 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:41:42,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 234 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:41:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-19 07:41:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2022-11-19 07:41:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 73 states have internal predecessors, (76), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-19 07:41:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2022-11-19 07:41:42,592 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 63 [2022-11-19 07:41:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:41:42,592 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2022-11-19 07:41:42,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 07:41:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2022-11-19 07:41:42,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:41:42,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:42,593 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-11-19 07:41:42,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:41:42,594 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:41:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1974085928, now seen corresponding path program 2 times [2022-11-19 07:41:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:42,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474973778] [2022-11-19 07:41:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:42,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:41:45,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:45,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474973778] [2022-11-19 07:41:45,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474973778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:41:45,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421968105] [2022-11-19 07:41:45,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:41:45,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:41:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:41:45,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:41:45,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48763-26f3-40c0-b4fb-57d0e4ea2170/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:41:45,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:41:45,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:41:45,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-19 07:41:45,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:41:45,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:41:45,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:41:45,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:41:45,691 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 [2022-11-19 07:41:45,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:41:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:41:45,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:41:45,720 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 [2022-11-19 07:42:11,651 WARN L233 SmtUtils]: Spent 10.05s 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) [2022-11-19 07:42:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:42:14,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:42:17,190 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 47210 treesize of output 46698