./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW --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 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- 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-4e7fbc6 [2022-11-23 15:41:59,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:41:59,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:41:59,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:41:59,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:41:59,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:41:59,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:41:59,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:41:59,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:41:59,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:41:59,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:41:59,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:41:59,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:41:59,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:41:59,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:41:59,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:41:59,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:41:59,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:41:59,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:41:59,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:41:59,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:41:59,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:41:59,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:41:59,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:41:59,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:41:59,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:41:59,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:41:59,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:41:59,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:41:59,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:41:59,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:41:59,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:41:59,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:41:59,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:41:59,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:41:59,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:41:59,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:41:59,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:41:59,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:41:59,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:41:59,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:41:59,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:41:59,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:41:59,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:41:59,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:41:59,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:41:59,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:41:59,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:41:59,203 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:41:59,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:41:59,203 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:41:59,204 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:41:59,204 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:41:59,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:41:59,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:41:59,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:41:59,204 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:41:59,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:41:59,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:41:59,205 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:41:59,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:41:59,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:41:59,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:41:59,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:41:59,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:41:59,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:41:59,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:41:59,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:41:59,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:41:59,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:41:59,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:41:59,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:41:59,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:41:59,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:41:59,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:41:59,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:41:59,212 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:41:59,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:41:59,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:41:59,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:41:59,213 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_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2022-11-23 15:41:59,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:41:59,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:41:59,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:41:59,543 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:41:59,544 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:41:59,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-23 15:42:02,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:42:03,162 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:42:03,163 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-23 15:42:03,205 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/data/92e9310ba/a861002d6f3548e999e2af220ed6acf2/FLAGf72ee7132 [2022-11-23 15:42:03,225 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/data/92e9310ba/a861002d6f3548e999e2af220ed6acf2 [2022-11-23 15:42:03,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:42:03,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:42:03,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:42:03,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:42:03,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:42:03,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:03" (1/1) ... [2022-11-23 15:42:03,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210167c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:03, skipping insertion in model container [2022-11-23 15:42:03,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:03" (1/1) ... [2022-11-23 15:42:03,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:42:03,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:42:03,649 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-23 15:42:03,656 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-23 15:42:04,479 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:42:04,569 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,571 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,585 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,586 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,587 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,601 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,601 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,603 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,604 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,605 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,605 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:04,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:42:04,901 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:42:04,902 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:42:04,903 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:42:04,904 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:42:04,905 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:42:04,906 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:42:04,907 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:42:04,908 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:42:04,908 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:42:05,040 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,046 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,103 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,107 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,108 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:42:05,151 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:42:05,175 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-23 15:42:05,181 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-23 15:42:05,230 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:42:05,251 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,252 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,252 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,253 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,253 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,260 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,260 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,262 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,262 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,263 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,264 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,264 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,265 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:42:05,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:42:05,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:42:05,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:42:05,308 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:42:05,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:42:05,312 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:42:05,312 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:42:05,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:42:05,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:42:05,347 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,352 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,374 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,375 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,375 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:42:05,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:42:05,635 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:42:05,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05 WrapperNode [2022-11-23 15:42:05,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:42:05,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:42:05,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:42:05,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:42:05,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,825 INFO L138 Inliner]: procedures = 691, calls = 1680, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 846 [2022-11-23 15:42:05,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:42:05,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:42:05,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:42:05,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:42:05,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:42:05,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:42:05,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:42:05,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:42:05,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (1/1) ... [2022-11-23 15:42:05,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:42:05,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:05,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:42:05,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:42:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:42:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-23 15:42:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-23 15:42:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-23 15:42:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-23 15:42:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-23 15:42:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-23 15:42:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-23 15:42:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-23 15:42:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:42:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-23 15:42:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-23 15:42:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:42:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:42:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:42:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:42:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:42:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-23 15:42:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-23 15:42:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:42:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:42:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 15:42:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 15:42:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-23 15:42:06,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-23 15:42:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-23 15:42:06,027 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-23 15:42:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-23 15:42:06,027 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-23 15:42:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-23 15:42:06,028 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-23 15:42:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-23 15:42:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-23 15:42:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:42:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:42:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-23 15:42:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-23 15:42:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-23 15:42:06,030 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-23 15:42:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:42:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-23 15:42:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-23 15:42:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:42:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:42:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-23 15:42:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-23 15:42:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-23 15:42:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-23 15:42:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-23 15:42:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-23 15:42:06,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:42:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-23 15:42:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-23 15:42:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-23 15:42:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-23 15:42:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:42:06,418 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:42:06,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:42:07,588 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:42:07,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:42:07,804 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:42:07,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:07 BoogieIcfgContainer [2022-11-23 15:42:07,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:42:07,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:42:07,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:42:07,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:42:07,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:42:03" (1/3) ... [2022-11-23 15:42:07,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565d572d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:07, skipping insertion in model container [2022-11-23 15:42:07,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:05" (2/3) ... [2022-11-23 15:42:07,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565d572d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:07, skipping insertion in model container [2022-11-23 15:42:07,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:07" (3/3) ... [2022-11-23 15:42:07,819 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2022-11-23 15:42:07,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:42:07,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:42:07,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:42:07,919 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;@68842034, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:42:07,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:42:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 127 states have (on average 1.204724409448819) internal successors, (153), 128 states have internal predecessors, (153), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-23 15:42:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 15:42:07,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:07,944 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:07,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -821114386, now seen corresponding path program 1 times [2022-11-23 15:42:07,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:07,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455930473] [2022-11-23 15:42:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:07,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-23 15:42:09,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:09,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455930473] [2022-11-23 15:42:09,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455930473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:09,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484842103] [2022-11-23 15:42:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:09,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:09,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:09,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:09,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:42:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:09,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:42:09,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-23 15:42:09,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:42:09,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484842103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:09,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:42:09,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 15:42:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995194114] [2022-11-23 15:42:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:09,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:42:09,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:42:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:42:09,985 INFO L87 Difference]: Start difference. First operand has 244 states, 127 states have (on average 1.204724409448819) internal successors, (153), 128 states have internal predecessors, (153), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 15:42:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:10,628 INFO L93 Difference]: Finished difference Result 467 states and 689 transitions. [2022-11-23 15:42:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:42:10,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 114 [2022-11-23 15:42:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:10,642 INFO L225 Difference]: With dead ends: 467 [2022-11-23 15:42:10,642 INFO L226 Difference]: Without dead ends: 244 [2022-11-23 15:42:10,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:42:10,650 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 32 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:10,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1049 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:42:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-23 15:42:10,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-23 15:42:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 129 states have internal predecessors, (152), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-23 15:42:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 353 transitions. [2022-11-23 15:42:10,718 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 353 transitions. Word has length 114 [2022-11-23 15:42:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:10,719 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 353 transitions. [2022-11-23 15:42:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 15:42:10,720 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 353 transitions. [2022-11-23 15:42:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-23 15:42:10,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:10,723 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:10,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:10,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:10,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:10,933 INFO L85 PathProgramCache]: Analyzing trace with hash -949916096, now seen corresponding path program 1 times [2022-11-23 15:42:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:10,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314850661] [2022-11-23 15:42:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:11,065 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:42:11,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886475344] [2022-11-23 15:42:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:11,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:11,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:11,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:11,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:42:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:11,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:42:11,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-23 15:42:11,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:42:11,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:11,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314850661] [2022-11-23 15:42:11,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:42:11,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886475344] [2022-11-23 15:42:11,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886475344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:11,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:11,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 15:42:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670335002] [2022-11-23 15:42:11,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:11,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:42:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:42:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:42:11,827 INFO L87 Difference]: Start difference. First operand 244 states and 353 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-23 15:42:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:12,682 INFO L93 Difference]: Finished difference Result 445 states and 643 transitions. [2022-11-23 15:42:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:42:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 132 [2022-11-23 15:42:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:12,692 INFO L225 Difference]: With dead ends: 445 [2022-11-23 15:42:12,693 INFO L226 Difference]: Without dead ends: 244 [2022-11-23 15:42:12,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:42:12,695 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 127 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:12,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1409 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:42:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-23 15:42:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-23 15:42:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 129 states have internal predecessors, (152), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2022-11-23 15:42:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 349 transitions. [2022-11-23 15:42:12,744 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 349 transitions. Word has length 132 [2022-11-23 15:42:12,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:12,749 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 349 transitions. [2022-11-23 15:42:12,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-23 15:42:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 349 transitions. [2022-11-23 15:42:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 15:42:12,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:12,763 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:12,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 15:42:12,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1708083302, now seen corresponding path program 2 times [2022-11-23 15:42:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:12,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677703646] [2022-11-23 15:42:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:13,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:42:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956045933] [2022-11-23 15:42:13,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:13,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:13,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:13,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:13,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:42:13,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 15:42:13,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:13,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:42:13,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-23 15:42:13,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:42:13,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:13,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677703646] [2022-11-23 15:42:13,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:42:13,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956045933] [2022-11-23 15:42:13,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956045933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:13,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:13,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:42:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269918824] [2022-11-23 15:42:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:13,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:42:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:42:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:42:13,679 INFO L87 Difference]: Start difference. First operand 244 states and 349 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:42:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:14,026 INFO L93 Difference]: Finished difference Result 427 states and 602 transitions. [2022-11-23 15:42:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:42:14,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 141 [2022-11-23 15:42:14,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:14,029 INFO L225 Difference]: With dead ends: 427 [2022-11-23 15:42:14,029 INFO L226 Difference]: Without dead ends: 248 [2022-11-23 15:42:14,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:42:14,031 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:14,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1229 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:42:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-23 15:42:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-23 15:42:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2022-11-23 15:42:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 354 transitions. [2022-11-23 15:42:14,056 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 354 transitions. Word has length 141 [2022-11-23 15:42:14,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:14,057 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 354 transitions. [2022-11-23 15:42:14,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:42:14,057 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 354 transitions. [2022-11-23 15:42:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 15:42:14,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:14,060 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:14,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 15:42:14,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -188427751, now seen corresponding path program 1 times [2022-11-23 15:42:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230682454] [2022-11-23 15:42:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:14,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:42:14,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515106962] [2022-11-23 15:42:14,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:14,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:14,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:14,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:14,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:42:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:15,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:42:15,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-23 15:42:15,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:42:15,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:15,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230682454] [2022-11-23 15:42:15,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:42:15,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515106962] [2022-11-23 15:42:15,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515106962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:15,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:15,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:42:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680701574] [2022-11-23 15:42:15,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:42:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:42:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:42:15,205 INFO L87 Difference]: Start difference. First operand 248 states and 354 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 15:42:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:15,919 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2022-11-23 15:42:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:42:15,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 145 [2022-11-23 15:42:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:15,922 INFO L225 Difference]: With dead ends: 448 [2022-11-23 15:42:15,922 INFO L226 Difference]: Without dead ends: 248 [2022-11-23 15:42:15,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:42:15,924 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 175 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:15,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1551 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:42:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-23 15:42:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-23 15:42:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2022-11-23 15:42:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2022-11-23 15:42:15,948 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 145 [2022-11-23 15:42:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:15,950 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2022-11-23 15:42:15,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 15:42:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2022-11-23 15:42:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 15:42:15,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:15,955 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:15,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:16,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:16,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:16,165 INFO L85 PathProgramCache]: Analyzing trace with hash 74652997, now seen corresponding path program 2 times [2022-11-23 15:42:16,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:16,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299631] [2022-11-23 15:42:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:16,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:16,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:42:16,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583343810] [2022-11-23 15:42:16,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:16,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:16,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:16,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:16,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:42:17,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 15:42:17,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:17,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:42:17,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-23 15:42:17,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:42:17,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299631] [2022-11-23 15:42:17,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:42:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583343810] [2022-11-23 15:42:17,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583343810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:17,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:17,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:42:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438370024] [2022-11-23 15:42:17,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:42:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:42:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:42:17,180 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:42:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:17,743 INFO L93 Difference]: Finished difference Result 445 states and 620 transitions. [2022-11-23 15:42:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:42:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 154 [2022-11-23 15:42:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:17,746 INFO L225 Difference]: With dead ends: 445 [2022-11-23 15:42:17,746 INFO L226 Difference]: Without dead ends: 248 [2022-11-23 15:42:17,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:42:17,748 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 0 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:17,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1118 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:42:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-23 15:42:17,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-23 15:42:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (99), 93 states have call predecessors, (99), 92 states have call successors, (99) [2022-11-23 15:42:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 347 transitions. [2022-11-23 15:42:17,763 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 347 transitions. Word has length 154 [2022-11-23 15:42:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:17,764 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 347 transitions. [2022-11-23 15:42:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:42:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 347 transitions. [2022-11-23 15:42:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-23 15:42:17,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:17,766 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:17,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:17,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:17,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:17,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1276385801, now seen corresponding path program 3 times [2022-11-23 15:42:17,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:17,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362197345] [2022-11-23 15:42:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:18,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:42:18,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717468130] [2022-11-23 15:42:18,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:42:18,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:18,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:18,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:18,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:42:18,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:42:18,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:18,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:42:18,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-23 15:42:19,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:42:19,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:19,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362197345] [2022-11-23 15:42:19,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:42:19,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717468130] [2022-11-23 15:42:19,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717468130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:19,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:19,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 15:42:19,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341632964] [2022-11-23 15:42:19,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:19,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:42:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:19,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:42:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:42:19,005 INFO L87 Difference]: Start difference. First operand 248 states and 347 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 15:42:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:19,969 INFO L93 Difference]: Finished difference Result 432 states and 594 transitions. [2022-11-23 15:42:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:42:19,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 163 [2022-11-23 15:42:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:19,971 INFO L225 Difference]: With dead ends: 432 [2022-11-23 15:42:19,972 INFO L226 Difference]: Without dead ends: 248 [2022-11-23 15:42:19,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:42:19,973 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 220 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:19,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1720 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:42:19,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-23 15:42:19,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-23 15:42:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2022-11-23 15:42:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 344 transitions. [2022-11-23 15:42:19,994 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 344 transitions. Word has length 163 [2022-11-23 15:42:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:19,995 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 344 transitions. [2022-11-23 15:42:19,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-23 15:42:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 344 transitions. [2022-11-23 15:42:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-23 15:42:19,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:19,998 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:20,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:20,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 15:42:20,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1561834877, now seen corresponding path program 1 times [2022-11-23 15:42:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:20,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623879031] [2022-11-23 15:42:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:20,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:42:20,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191093865] [2022-11-23 15:42:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:20,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:20,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:20,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:20,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc38101b-d7fa-442a-915a-6905d8aad4d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:42:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:21,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 3200 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-23 15:42:21,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-23 15:42:21,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-23 15:42:21,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:21,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623879031] [2022-11-23 15:42:21,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:42:21,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191093865] [2022-11-23 15:42:21,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191093865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:21,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643080586] [2022-11-23 15:42:21,938 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2022-11-23 15:42:21,938 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:21,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:21,947 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:21,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:25,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:42:25,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:42:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:42:26,059 INFO L217 Elim1Store]: Index analysis took 432 ms [2022-11-23 15:42:54,733 WARN L233 SmtUtils]: Spent 28.60s on a formula simplification. DAG size of input: 2128 DAG size of output: 1161 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:42:54,740 INFO L321 Elim1Store]: treesize reduction 3474, result has 33.3 percent of original size [2022-11-23 15:42:54,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 198 select indices, 198 select index equivalence classes, 19310 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 386 case distinctions, treesize of input 997 treesize of output 2357 [2022-11-23 15:42:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:42:58,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:42:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:42:58,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 196 select indices, 196 select index equivalence classes, 19307 disjoint index pairs (out of 19110 index pairs), introduced 196 new quantified variables, introduced 0 case distinctions, treesize of input 987 treesize of output 1574 [2022-11-23 15:44:07,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:07,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2022-11-23 15:44:07,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:07,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2022-11-23 15:44:07,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 15:44:08,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:08,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:08,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2022-11-23 15:44:11,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:11,635 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-23 15:44:11,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19501 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 2 case distinctions, treesize of input 991 treesize of output 595 [2022-11-23 15:44:12,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,263 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-23 15:44:12,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 197 select indices, 197 select index equivalence classes, 19305 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 2 case distinctions, treesize of input 986 treesize of output 592 [2022-11-23 15:44:12,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:12,735 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:44:12,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 55 select indices, 55 select index equivalence classes, 1245 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 4 case distinctions, treesize of input 644 treesize of output 304 [2022-11-23 15:44:13,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,210 INFO L217 Elim1Store]: Index analysis took 128 ms [2022-11-23 15:44:13,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:13,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:13,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,308 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 15:44:13,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 586 [2022-11-23 15:44:13,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,951 INFO L217 Elim1Store]: Index analysis took 128 ms [2022-11-23 15:44:13,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:13,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:13,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:13,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,048 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-23 15:44:14,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 594 [2022-11-23 15:44:23,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,444 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-23 15:44:23,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19501 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 2 case distinctions, treesize of input 991 treesize of output 595 [2022-11-23 15:44:23,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:23,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:23,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:24,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,059 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 15:44:24,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 586 [2022-11-23 15:44:24,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:24,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:24,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:24,695 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-23 15:44:24,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 594 [2022-11-23 15:44:25,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 55 select indices, 55 select index equivalence classes, 1243 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 644 treesize of output 304 [2022-11-23 15:44:25,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:25,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 197 select indices, 197 select index equivalence classes, 19309 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 986 treesize of output 592 [2022-11-23 15:44:26,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 15:44:26,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 15:44:26,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 15:44:26,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 15:44:26,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:44:26,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 15:44:26,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 15:44:26,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 15:44:26,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:44:26,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2022-11-23 15:44:26,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:26,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:27,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:27,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:27,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:44:27,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2022-11-23 15:44:27,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 15:44:27,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-23 15:44:27,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:27,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-23 15:44:27,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:27,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2022-11-23 15:44:29,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-23 15:44:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:29,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-23 15:44:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:29,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2022-11-23 15:44:30,754 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 15:44:30,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-23 15:44:30,810 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 15:44:30,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-23 15:44:31,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,075 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 15:44:31,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 81 treesize of output 33 [2022-11-23 15:44:31,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:44:31,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,117 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-23 15:44:31,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 38 [2022-11-23 15:44:31,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,140 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-23 15:44:31,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 32 [2022-11-23 15:44:31,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:44:31,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:44:31,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,386 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-23 15:44:31,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 38 [2022-11-23 15:44:31,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,409 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-23 15:44:31,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 32 [2022-11-23 15:44:31,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:44:31,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:31,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:31,454 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 15:44:31,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 81 treesize of output 33 [2022-11-23 15:44:49,181 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 47 for LOIs [2022-11-23 15:44:49,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 15:44:49,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 15:44:49,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:49,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:49,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:49,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:49,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:44:49,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2022-11-23 15:44:49,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:49,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:49,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:44:49,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2022-11-23 15:44:49,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:49,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 15:44:49,726 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-23 15:44:49,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 180 treesize of output 197 [2022-11-23 15:44:50,304 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 94 for LOIs [2022-11-23 15:44:50,634 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 80 for LOIs [2022-11-23 15:44:50,658 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2819 for LOIs [2022-11-23 15:44:53,947 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 2869 for LOIs [2022-11-23 15:46:36,436 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 2864 for LOIs [2022-11-23 15:46:42,928 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-23 15:46:42,941 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 88 for LOIs [2022-11-23 15:46:43,057 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 82 for LOIs [2022-11-23 15:46:43,069 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:48:31,406 WARN L233 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 2815 DAG size of output: 2431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:07,564 WARN L233 SmtUtils]: Spent 2.58m on a formula simplification. DAG size of input: 2819 DAG size of output: 2435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:54:17,138 WARN L233 SmtUtils]: Spent 3.14m on a formula simplification. DAG size of input: 2861 DAG size of output: 2477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)