./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/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_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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-8393723 [2022-11-19 07:20:37,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:20:37,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:20:37,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:20:37,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:20:37,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:20:37,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:20:37,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:20:37,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:20:37,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:20:37,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:20:37,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:20:37,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:20:37,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:20:37,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:20:37,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:20:37,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:20:37,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:20:37,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:20:37,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:20:37,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:20:37,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:20:37,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:20:37,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:20:37,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:20:37,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:20:37,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:20:37,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:20:37,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:20:37,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:20:37,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:20:37,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:20:37,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:20:37,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:20:37,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:20:37,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:20:37,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:20:37,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:20:37,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:20:37,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:20:37,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:20:37,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:20:37,372 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:20:37,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:20:37,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:20:37,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:20:37,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:20:37,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:20:37,374 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:20:37,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:20:37,383 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:20:37,383 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:20:37,387 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:20:37,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:20:37,387 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:20:37,387 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:20:37,388 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:20:37,388 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:20:37,388 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:20:37,388 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:20:37,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:20:37,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:20:37,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:20:37,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:20:37,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:20:37,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:20:37,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:20:37,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:20:37,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:20:37,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:20:37,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:20:37,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:37,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:20:37,394 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:20:37,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:20:37,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:20:37,394 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:20:37,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:20:37,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:20:37,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:20:37,395 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_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2022-11-19 07:20:37,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:20:37,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:20:37,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:20:37,759 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:20:37,760 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:20:37,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-19 07:20:37,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/data/7f9ca2509/f5155091396b4f55acbde996d8e64f1a/FLAG10aef7831 [2022-11-19 07:20:38,721 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:20:38,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-19 07:20:38,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/data/7f9ca2509/f5155091396b4f55acbde996d8e64f1a/FLAG10aef7831 [2022-11-19 07:20:39,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/data/7f9ca2509/f5155091396b4f55acbde996d8e64f1a [2022-11-19 07:20:39,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:20:39,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:20:39,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:39,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:20:39,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:20:39,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:39" (1/1) ... [2022-11-19 07:20:39,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42727e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:39, skipping insertion in model container [2022-11-19 07:20:39,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:39" (1/1) ... [2022-11-19 07:20:39,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:20:39,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:20:39,755 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-19 07:20:39,763 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-19 07:20:40,959 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:20:41,074 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,078 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,080 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,081 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,084 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,098 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,104 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,107 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,111 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,114 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,115 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,119 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,119 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,646 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:20:41,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:20:41,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:20:41,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:20:41,661 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:20:41,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:20:41,664 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:20:41,666 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:20:41,669 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:20:41,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:20:41,917 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:41,928 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,016 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,016 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,017 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:42,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:20:42,084 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-19 07:20:42,085 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-19 07:20:42,120 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:20:42,135 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,136 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,136 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,137 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,137 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,145 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,146 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,152 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,153 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,154 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,155 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,156 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,156 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,213 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:20:42,214 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:20:42,215 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:20:42,217 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:20:42,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:20:42,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:20:42,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:20:42,250 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:20:42,251 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:20:42,251 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:20:42,291 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,297 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,324 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,325 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,325 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:20:42,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:42,562 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:20:42,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42 WrapperNode [2022-11-19 07:20:42,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:42,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:42,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:20:42,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:20:42,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,712 INFO L138 Inliner]: procedures = 691, calls = 1680, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 846 [2022-11-19 07:20:42,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:42,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:20:42,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:20:42,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:20:42,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,825 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:20:42,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:20:42,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:20:42,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:20:42,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (1/1) ... [2022-11-19 07:20:42,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:42,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:42,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:20:42,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:20:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:20:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-19 07:20:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-19 07:20:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-19 07:20:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-19 07:20:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 07:20:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 07:20:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-19 07:20:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-19 07:20:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:20:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-19 07:20:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-19 07:20:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:20:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:20:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:20:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:20:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:20:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-19 07:20:42,977 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-19 07:20:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:20:42,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:20:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 07:20:42,978 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 07:20:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-19 07:20:42,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-19 07:20:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-19 07:20:42,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-19 07:20:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-19 07:20:42,981 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-19 07:20:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-19 07:20:42,981 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-19 07:20:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-19 07:20:42,983 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-19 07:20:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:20:42,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:20:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-19 07:20:42,983 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-19 07:20:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-19 07:20:42,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-19 07:20:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:20:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-19 07:20:42,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-19 07:20:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:20:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:20:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-19 07:20:42,985 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-19 07:20:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-19 07:20:42,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-19 07:20:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-19 07:20:42,987 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-19 07:20:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:20:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-19 07:20:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-19 07:20:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-19 07:20:42,992 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-19 07:20:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:20:43,426 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:20:43,429 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:20:44,892 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:20:45,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:20:45,117 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:20:45,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:45 BoogieIcfgContainer [2022-11-19 07:20:45,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:20:45,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:20:45,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:20:45,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:20:45,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:20:39" (1/3) ... [2022-11-19 07:20:45,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477235d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:45, skipping insertion in model container [2022-11-19 07:20:45,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:42" (2/3) ... [2022-11-19 07:20:45,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477235d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:45, skipping insertion in model container [2022-11-19 07:20:45,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:45" (3/3) ... [2022-11-19 07:20:45,131 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2022-11-19 07:20:45,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:20:45,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:20:45,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:20:45,250 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;@d104366, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:20:45,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:20:45,256 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) [2022-11-19 07:20:45,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 07:20:45,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:45,270 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] [2022-11-19 07:20:45,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -821114386, now seen corresponding path program 1 times [2022-11-19 07:20:45,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:45,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863097043] [2022-11-19 07:20:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:45,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-19 07:20:46,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:46,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863097043] [2022-11-19 07:20:46,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863097043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:20:46,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540933087] [2022-11-19 07:20:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:46,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:46,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:46,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:46,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:20:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:47,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:20:47,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-19 07:20:47,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:47,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540933087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:47,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:20:47,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:20:47,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146270208] [2022-11-19 07:20:47,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:47,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:20:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:47,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:20:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:20:47,294 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) [2022-11-19 07:20:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:48,127 INFO L93 Difference]: Finished difference Result 467 states and 689 transitions. [2022-11-19 07:20:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:20:48,130 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 [2022-11-19 07:20:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:48,143 INFO L225 Difference]: With dead ends: 467 [2022-11-19 07:20:48,143 INFO L226 Difference]: Without dead ends: 244 [2022-11-19 07:20:48,148 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 [2022-11-19 07:20:48,152 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 32 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:48,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1049 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:20:48,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-19 07:20:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-19 07:20:48,223 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) [2022-11-19 07:20:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 353 transitions. [2022-11-19 07:20:48,228 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 353 transitions. Word has length 114 [2022-11-19 07:20:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:48,229 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 353 transitions. [2022-11-19 07:20:48,229 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) [2022-11-19 07:20:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 353 transitions. [2022-11-19 07:20:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 07:20:48,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:48,233 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] [2022-11-19 07:20:48,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:48,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -949916096, now seen corresponding path program 1 times [2022-11-19 07:20:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:48,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294506381] [2022-11-19 07:20:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:48,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:20:48,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748670584] [2022-11-19 07:20:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:48,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:48,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:48,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:20:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:49,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:20:49,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-19 07:20:49,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:49,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:49,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294506381] [2022-11-19 07:20:49,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:20:49,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748670584] [2022-11-19 07:20:49,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748670584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:49,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:49,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:20:49,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241346049] [2022-11-19 07:20:49,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:49,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:20:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:20:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:20:49,502 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) [2022-11-19 07:20:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:50,479 INFO L93 Difference]: Finished difference Result 445 states and 643 transitions. [2022-11-19 07:20:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:20:50,480 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 [2022-11-19 07:20:50,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:50,494 INFO L225 Difference]: With dead ends: 445 [2022-11-19 07:20:50,495 INFO L226 Difference]: Without dead ends: 244 [2022-11-19 07:20:50,497 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 [2022-11-19 07:20:50,498 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 127 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:50,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1409 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:20:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-19 07:20:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-19 07:20:50,547 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) [2022-11-19 07:20:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 349 transitions. [2022-11-19 07:20:50,557 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 349 transitions. Word has length 132 [2022-11-19 07:20:50,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:50,560 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 349 transitions. [2022-11-19 07:20:50,564 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) [2022-11-19 07:20:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 349 transitions. [2022-11-19 07:20:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-19 07:20:50,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:50,574 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] [2022-11-19 07:20:50,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:50,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:50,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1708083302, now seen corresponding path program 2 times [2022-11-19 07:20:50,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:50,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361665779] [2022-11-19 07:20:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:50,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:50,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:20:50,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619270430] [2022-11-19 07:20:50,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:20:50,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:50,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:50,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:50,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:20:51,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 07:20:51,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:20:51,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:20:51,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-19 07:20:51,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:51,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361665779] [2022-11-19 07:20:51,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:20:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619270430] [2022-11-19 07:20:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619270430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:51,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:51,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:20:51,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161417048] [2022-11-19 07:20:51,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:51,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:20:51,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:20:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:20:51,498 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) [2022-11-19 07:20:52,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:52,103 INFO L93 Difference]: Finished difference Result 427 states and 602 transitions. [2022-11-19 07:20:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:20:52,104 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 [2022-11-19 07:20:52,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:52,107 INFO L225 Difference]: With dead ends: 427 [2022-11-19 07:20:52,107 INFO L226 Difference]: Without dead ends: 248 [2022-11-19 07:20:52,108 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 [2022-11-19 07:20:52,109 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:52,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1229 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:20:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-19 07:20:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-19 07:20:52,133 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) [2022-11-19 07:20:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 354 transitions. [2022-11-19 07:20:52,136 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 354 transitions. Word has length 141 [2022-11-19 07:20:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:52,137 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 354 transitions. [2022-11-19 07:20:52,137 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) [2022-11-19 07:20:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 354 transitions. [2022-11-19 07:20:52,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-19 07:20:52,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:52,140 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] [2022-11-19 07:20:52,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:52,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:52,350 INFO L85 PathProgramCache]: Analyzing trace with hash -188427751, now seen corresponding path program 1 times [2022-11-19 07:20:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:52,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187994040] [2022-11-19 07:20:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:52,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:52,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:20:52,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623056647] [2022-11-19 07:20:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:52,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:52,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:52,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:52,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:20:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:53,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:20:53,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-19 07:20:53,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:53,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:53,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187994040] [2022-11-19 07:20:53,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:20:53,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623056647] [2022-11-19 07:20:53,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623056647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:53,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:53,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:20:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040388743] [2022-11-19 07:20:53,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:53,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:20:53,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:20:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:20:53,389 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) [2022-11-19 07:20:54,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:54,496 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2022-11-19 07:20:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:20:54,498 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 [2022-11-19 07:20:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:54,501 INFO L225 Difference]: With dead ends: 448 [2022-11-19 07:20:54,501 INFO L226 Difference]: Without dead ends: 248 [2022-11-19 07:20:54,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:20:54,503 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 175 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:54,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1551 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:20:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-19 07:20:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-19 07:20:54,526 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) [2022-11-19 07:20:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2022-11-19 07:20:54,529 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 145 [2022-11-19 07:20:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:54,530 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2022-11-19 07:20:54,530 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) [2022-11-19 07:20:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2022-11-19 07:20:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 07:20:54,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:54,535 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] [2022-11-19 07:20:54,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:54,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:54,749 INFO L85 PathProgramCache]: Analyzing trace with hash 74652997, now seen corresponding path program 2 times [2022-11-19 07:20:54,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:54,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544328180] [2022-11-19 07:20:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:54,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:54,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:20:54,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587786214] [2022-11-19 07:20:54,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:20:54,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:54,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:54,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:54,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:20:55,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:20:55,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:20:55,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:20:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-19 07:20:55,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:55,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:55,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544328180] [2022-11-19 07:20:55,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:20:55,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587786214] [2022-11-19 07:20:55,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587786214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:55,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:55,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:20:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989029877] [2022-11-19 07:20:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:55,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:20:55,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:20:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:20:55,901 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) [2022-11-19 07:20:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:56,500 INFO L93 Difference]: Finished difference Result 445 states and 620 transitions. [2022-11-19 07:20:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:20:56,500 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 [2022-11-19 07:20:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:56,504 INFO L225 Difference]: With dead ends: 445 [2022-11-19 07:20:56,504 INFO L226 Difference]: Without dead ends: 248 [2022-11-19 07:20:56,505 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 [2022-11-19 07:20:56,507 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:56,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1118 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:20:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-19 07:20:56,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-19 07:20:56,541 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) [2022-11-19 07:20:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 347 transitions. [2022-11-19 07:20:56,544 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 347 transitions. Word has length 154 [2022-11-19 07:20:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:56,548 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 347 transitions. [2022-11-19 07:20:56,548 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) [2022-11-19 07:20:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 347 transitions. [2022-11-19 07:20:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 07:20:56,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:56,554 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] [2022-11-19 07:20:56,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:56,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:56,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1276385801, now seen corresponding path program 3 times [2022-11-19 07:20:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:56,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163370598] [2022-11-19 07:20:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:56,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:20:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935790896] [2022-11-19 07:20:56,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:20:56,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:56,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:56,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:56,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:20:57,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:20:57,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:20:57,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:20:57,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-19 07:20:57,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:57,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163370598] [2022-11-19 07:20:57,775 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:20:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935790896] [2022-11-19 07:20:57,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935790896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:57,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:57,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:20:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028031221] [2022-11-19 07:20:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:57,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:20:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:20:57,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:20:57,778 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) [2022-11-19 07:20:58,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:58,622 INFO L93 Difference]: Finished difference Result 432 states and 594 transitions. [2022-11-19 07:20:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:20:58,623 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 [2022-11-19 07:20:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:58,625 INFO L225 Difference]: With dead ends: 432 [2022-11-19 07:20:58,625 INFO L226 Difference]: Without dead ends: 248 [2022-11-19 07:20:58,626 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 [2022-11-19 07:20:58,627 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 220 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:58,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1720 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:20:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-19 07:20:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-19 07:20:58,641 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) [2022-11-19 07:20:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 344 transitions. [2022-11-19 07:20:58,643 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 344 transitions. Word has length 163 [2022-11-19 07:20:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:58,644 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 344 transitions. [2022-11-19 07:20:58,645 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) [2022-11-19 07:20:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 344 transitions. [2022-11-19 07:20:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-19 07:20:58,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:58,647 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] [2022-11-19 07:20:58,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:58,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:20:58,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1561834877, now seen corresponding path program 1 times [2022-11-19 07:20:58,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:58,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388764255] [2022-11-19 07:20:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:58,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:58,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:20:58,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158790742] [2022-11-19 07:20:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:58,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:58,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:58,995 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:59,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5022e41-d0ca-4f14-857b-6e702a65a19a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:20:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:59,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 3200 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-19 07:20:59,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:21:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-19 07:21:00,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:21:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-19 07:21:00,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388764255] [2022-11-19 07:21:00,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:21:00,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158790742] [2022-11-19 07:21:00,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158790742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:00,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956007356] [2022-11-19 07:21:00,654 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2022-11-19 07:21:00,654 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:21:00,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:21:00,666 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:21:00,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:21:04,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:04,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:04,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:04,476 INFO L217 Elim1Store]: Index analysis took 473 ms [2022-11-19 07:21:35,410 WARN L233 SmtUtils]: Spent 30.82s 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) [2022-11-19 07:21:35,418 INFO L321 Elim1Store]: treesize reduction 3474, result has 33.3 percent of original size [2022-11-19 07:21:35,423 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 [2022-11-19 07:21:39,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:39,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:39,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:39,197 INFO L217 Elim1Store]: Index analysis took 112 ms [2022-11-19 07:21:39,252 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 [2022-11-19 07:22:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:45,404 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 [2022-11-19 07:22:45,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:45,410 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 [2022-11-19 07:22:45,418 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 [2022-11-19 07:22:45,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:45,427 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 [2022-11-19 07:22:48,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:48,921 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:22:48,927 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 [2022-11-19 07:22:49,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:22:49,418 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 [2022-11-19 07:22:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:49,994 INFO L217 Elim1Store]: Index analysis took 176 ms [2022-11-19 07:22:50,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:50,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:50,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:22:50,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:50,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:50,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:22:50,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:50,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:50,104 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:22:50,108 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 [2022-11-19 07:22:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:50,692 INFO L217 Elim1Store]: Index analysis took 111 ms [2022-11-19 07:22:50,754 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:22:50,760 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 [2022-11-19 07:22:51,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,452 INFO L217 Elim1Store]: Index analysis took 145 ms [2022-11-19 07:22:51,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:22:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:22:51,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:22:51,560 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-19 07:22:51,565 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 [2022-11-19 07:23:00,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:00,496 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:23:00,500 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 [2022-11-19 07:23:00,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:00,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,146 INFO L217 Elim1Store]: Index analysis took 154 ms [2022-11-19 07:23:01,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:01,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:01,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,229 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:23:01,233 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 [2022-11-19 07:23:01,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:01,701 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:23:01,706 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 [2022-11-19 07:23:02,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:02,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:02,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,327 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-19 07:23:02,331 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 [2022-11-19 07:23:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:02,747 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 [2022-11-19 07:23:03,794 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 [2022-11-19 07:23:03,801 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 [2022-11-19 07:23:03,833 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 [2022-11-19 07:23:03,838 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 [2022-11-19 07:23:03,876 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 [2022-11-19 07:23:03,883 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 [2022-11-19 07:23:03,890 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 [2022-11-19 07:23:03,904 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 [2022-11-19 07:23:03,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:23:03,959 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 [2022-11-19 07:23:03,969 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 [2022-11-19 07:23:03,980 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 [2022-11-19 07:23:04,014 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 [2022-11-19 07:23:04,019 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 [2022-11-19 07:23:04,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:23:04,047 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 [2022-11-19 07:23:04,102 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 [2022-11-19 07:23:04,676 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 [2022-11-19 07:23:04,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:04,757 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 [2022-11-19 07:23:04,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:04,796 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 [2022-11-19 07:23:06,056 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 [2022-11-19 07:23:06,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:06,600 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 [2022-11-19 07:23:06,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:06,644 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 [2022-11-19 07:23:07,522 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:23:07,523 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 [2022-11-19 07:23:07,576 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:23:07,577 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 [2022-11-19 07:23:07,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:07,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:07,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:07,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:07,840 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:23:07,840 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 [2022-11-19 07:23:07,855 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 [2022-11-19 07:23:07,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:07,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:07,886 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:23:07,886 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 [2022-11-19 07:23:07,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:07,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:07,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:07,910 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:23:07,910 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 [2022-11-19 07:23:07,925 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 [2022-11-19 07:23:08,034 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 [2022-11-19 07:23:08,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:08,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:08,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:08,149 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:23:08,150 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 [2022-11-19 07:23:08,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:08,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:08,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:08,173 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:23:08,173 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 [2022-11-19 07:23:08,191 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 [2022-11-19 07:23:08,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:08,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:08,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:08,220 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:23:08,221 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 [2022-11-19 07:23:26,089 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 41 for LOIs [2022-11-19 07:23:26,110 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 [2022-11-19 07:23:26,122 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 [2022-11-19 07:23:26,176 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 [2022-11-19 07:23:26,185 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 [2022-11-19 07:23:26,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:26,206 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:23:26,206 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 [2022-11-19 07:23:26,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:26,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:23:26,266 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:23:26,266 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 [2022-11-19 07:23:26,280 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 [2022-11-19 07:23:26,288 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 [2022-11-19 07:23:26,554 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-19 07:23:26,555 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 [2022-11-19 07:23:27,146 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 88 for LOIs [2022-11-19 07:23:27,444 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 74 for LOIs [2022-11-19 07:23:27,468 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2815 for LOIs [2022-11-19 07:23:30,942 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 2861 for LOIs [2022-11-19 07:25:05,871 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 2856 for LOIs [2022-11-19 07:25:11,849 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 37 for LOIs [2022-11-19 07:25:11,851 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 82 for LOIs [2022-11-19 07:25:11,960 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 76 for LOIs [2022-11-19 07:25:11,977 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:27:02,683 WARN L233 SmtUtils]: Spent 1.83m on a formula simplification. DAG size of input: 2811 DAG size of output: 2427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:11,669 WARN L233 SmtUtils]: Spent 3.13m 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) [2022-11-19 07:34:00,860 WARN L233 SmtUtils]: Spent 3.79m on a formula simplification. DAG size of input: 2857 DAG size of output: 2473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)