./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V --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 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:45:46,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:45:46,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:45:46,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:45:46,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:45:46,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:45:46,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:45:46,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:45:46,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:45:46,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:45:46,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:45:46,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:45:46,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:45:46,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:45:46,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:45:46,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:45:46,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:45:46,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:45:46,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:45:46,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:45:46,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:45:46,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:45:46,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:45:46,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:45:46,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:45:46,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:45:46,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:45:46,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:45:46,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:45:46,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:45:46,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:45:46,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:45:46,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:45:46,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:45:46,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:45:46,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:45:46,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:45:46,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:45:46,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:45:46,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:45:46,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:45:46,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:45:46,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:45:46,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:45:46,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:45:46,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:45:46,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:45:46,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:45:46,239 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:45:46,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:45:46,239 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:45:46,239 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:45:46,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:45:46,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:45:46,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:45:46,240 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:45:46,240 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:45:46,240 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:45:46,241 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:45:46,241 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:45:46,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:45:46,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:45:46,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:45:46,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:45:46,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:45:46,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:45:46,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:45:46,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:45:46,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:45:46,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:45:46,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:45:46,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:46,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:45:46,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:45:46,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:45:46,244 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:45:46,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:45:46,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:45:46,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:45:46,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:45:46,245 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2021-11-23 03:45:46,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:45:46,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:45:46,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:45:46,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:45:46,498 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:45:46,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-11-23 03:45:46,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/data/fc6a6e703/781f79ad8cd94aa9a38ae18e0101fc97/FLAGf5d8bf7e8 [2021-11-23 03:45:47,367 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:45:47,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-11-23 03:45:47,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/data/fc6a6e703/781f79ad8cd94aa9a38ae18e0101fc97/FLAGf5d8bf7e8 [2021-11-23 03:45:47,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/data/fc6a6e703/781f79ad8cd94aa9a38ae18e0101fc97 [2021-11-23 03:45:47,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:45:47,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:45:47,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:47,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:45:47,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:45:47,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:47" (1/1) ... [2021-11-23 03:45:47,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78570119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:47, skipping insertion in model container [2021-11-23 03:45:47,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:47" (1/1) ... [2021-11-23 03:45:47,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:45:47,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:45:47,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2021-11-23 03:45:47,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2021-11-23 03:45:48,812 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:45:48,911 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:48,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,289 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:45:49,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:45:49,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:45:49,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:45:49,295 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:45:49,296 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:45:49,297 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:45:49,298 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:45:49,298 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:45:49,299 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:45:49,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,451 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:49,564 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:45:49,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2021-11-23 03:45:49,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2021-11-23 03:45:49,632 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:45:49,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,661 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,662 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:45:49,704 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:45:49,704 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:45:49,705 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:45:49,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:45:49,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:45:49,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:45:49,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:45:49,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:45:49,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:45:49,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:45:49,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:50,150 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:45:50,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50 WrapperNode [2021-11-23 03:45:50,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:50,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:50,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:45:50,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:45:50,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,374 INFO L137 Inliner]: procedures = 690, calls = 1715, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 681 [2021-11-23 03:45:50,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:50,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:45:50,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:45:50,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:45:50,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:45:50,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:45:50,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:45:50,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:45:50,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (1/1) ... [2021-11-23 03:45:50,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:50,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:50,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:45:50,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:45:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:45:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-23 03:45:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-23 03:45:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-23 03:45:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-23 03:45:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:45:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:45:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:45:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 03:45:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 03:45:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:45:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:45:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:45:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:45:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-23 03:45:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-23 03:45:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:45:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:45:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:45:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:45:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:45:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-23 03:45:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-23 03:45:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-23 03:45:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-23 03:45:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:45:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:45:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:45:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:45:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:45:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:45:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:45:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-23 03:45:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-23 03:45:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:45:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-11-23 03:45:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-11-23 03:45:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-23 03:45:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-23 03:45:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:45:50,979 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:45:50,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:45:52,712 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:45:52,827 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:45:52,827 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:45:52,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:52 BoogieIcfgContainer [2021-11-23 03:45:52,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:45:52,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:45:52,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:45:52,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:45:52,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:47" (1/3) ... [2021-11-23 03:45:52,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ab0ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:52, skipping insertion in model container [2021-11-23 03:45:52,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:50" (2/3) ... [2021-11-23 03:45:52,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ab0ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:52, skipping insertion in model container [2021-11-23 03:45:52,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:52" (3/3) ... [2021-11-23 03:45:52,842 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2021-11-23 03:45:52,848 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:45:52,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:45:52,916 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:45:52,935 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:45:52,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:45:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 03:45:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 03:45:52,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:52,982 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:52,983 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:52,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1315314645, now seen corresponding path program 1 times [2021-11-23 03:45:53,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:53,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275987123] [2021-11-23 03:45:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:53,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-23 03:45:53,688 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:53,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275987123] [2021-11-23 03:45:53,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275987123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:45:53,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420091243] [2021-11-23 03:45:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:53,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:53,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:45:53,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:45:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:54,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2406 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:45:54,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:45:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-23 03:45:54,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:45:54,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420091243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:54,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:45:54,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-23 03:45:54,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405658601] [2021-11-23 03:45:54,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:54,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:45:54,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:45:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:45:54,777 INFO L87 Difference]: Start difference. First operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:45:55,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:55,416 INFO L93 Difference]: Finished difference Result 270 states and 378 transitions. [2021-11-23 03:45:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:45:55,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 133 [2021-11-23 03:45:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:55,434 INFO L225 Difference]: With dead ends: 270 [2021-11-23 03:45:55,434 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 03:45:55,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:45:55,448 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 24 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:55,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 550 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:45:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 03:45:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-23 03:45:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2021-11-23 03:45:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2021-11-23 03:45:55,531 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 133 [2021-11-23 03:45:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:55,532 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2021-11-23 03:45:55,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:45:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2021-11-23 03:45:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-23 03:45:55,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:55,548 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:55,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:45:55,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:55,766 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash 53104247, now seen corresponding path program 1 times [2021-11-23 03:45:55,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:55,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192801490] [2021-11-23 03:45:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:55,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:55,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:45:55,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556437916] [2021-11-23 03:45:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:55,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:55,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:55,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:45:55,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:45:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:56,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:45:56,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:45:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-23 03:45:56,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:45:56,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:56,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192801490] [2021-11-23 03:45:56,729 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:45:56,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556437916] [2021-11-23 03:45:56,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556437916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:56,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:56,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:45:56,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007722551] [2021-11-23 03:45:56,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:56,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:45:56,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:45:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:45:56,734 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:45:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:57,244 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2021-11-23 03:45:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:45:57,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 142 [2021-11-23 03:45:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:57,249 INFO L225 Difference]: With dead ends: 236 [2021-11-23 03:45:57,250 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 03:45:57,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:45:57,252 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:57,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 547 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:45:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 03:45:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-23 03:45:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2021-11-23 03:45:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2021-11-23 03:45:57,272 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 142 [2021-11-23 03:45:57,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:57,273 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2021-11-23 03:45:57,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:45:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2021-11-23 03:45:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 03:45:57,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:57,277 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:57,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:45:57,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:57,491 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash -811212753, now seen corresponding path program 2 times [2021-11-23 03:45:57,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:57,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445045349] [2021-11-23 03:45:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:57,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:57,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:45:57,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179509568] [2021-11-23 03:45:57,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:45:57,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:57,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:57,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:45:57,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:45:58,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 03:45:58,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:45:58,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:45:58,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:45:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-23 03:45:58,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:45:58,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:58,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445045349] [2021-11-23 03:45:58,679 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:45:58,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179509568] [2021-11-23 03:45:58,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179509568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:58,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:58,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:45:58,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203911990] [2021-11-23 03:45:58,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:58,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:45:58,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:58,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:45:58,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:45:58,683 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:45:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:59,809 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2021-11-23 03:45:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:45:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 151 [2021-11-23 03:45:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:59,813 INFO L225 Difference]: With dead ends: 201 [2021-11-23 03:45:59,813 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 03:45:59,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:45:59,815 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:59,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 03:45:59,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 03:45:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-23 03:45:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (54), 51 states have call predecessors, (54), 51 states have call successors, (54) [2021-11-23 03:45:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2021-11-23 03:45:59,835 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 151 [2021-11-23 03:45:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:59,836 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2021-11-23 03:45:59,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:45:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2021-11-23 03:45:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 03:45:59,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:59,840 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:59,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:46:00,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:00,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1427972551, now seen corresponding path program 3 times [2021-11-23 03:46:00,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:00,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905045442] [2021-11-23 03:46:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:00,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:00,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:46:00,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078849622] [2021-11-23 03:46:00,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:46:00,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:00,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:46:00,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:46:00,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:46:00,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:46:00,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:46:00,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:46:00,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-11-23 03:46:01,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:46:01,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905045442] [2021-11-23 03:46:01,006 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:46:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078849622] [2021-11-23 03:46:01,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078849622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:46:01,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:46:01,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:46:01,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354968492] [2021-11-23 03:46:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:01,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:46:01,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:46:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:46:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:46:01,009 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-23 03:46:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:02,729 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2021-11-23 03:46:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:46:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 160 [2021-11-23 03:46:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:02,733 INFO L225 Difference]: With dead ends: 206 [2021-11-23 03:46:02,733 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 03:46:02,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:46:02,735 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 21 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:02,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 671 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:46:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 03:46:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-23 03:46:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2021-11-23 03:46:02,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2021-11-23 03:46:02,757 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 160 [2021-11-23 03:46:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:02,758 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2021-11-23 03:46:02,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-23 03:46:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2021-11-23 03:46:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-23 03:46:02,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:02,761 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:46:02,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:02,987 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -539264431, now seen corresponding path program 1 times [2021-11-23 03:46:02,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:02,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653216039] [2021-11-23 03:46:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:02,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:03,054 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:46:03,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393186376] [2021-11-23 03:46:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:03,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:03,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:46:03,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:46:03,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2909f28-addd-4f6f-ab54-d84798e742f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:46:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:04,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 328 conjunts are in the unsatisfiable core [2021-11-23 03:46:04,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:04,470 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:46:04,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-23 03:46:05,146 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-23 03:46:05,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 29 [2021-11-23 03:46:06,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:46:06,408 INFO L354 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2021-11-23 03:46:06,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2021-11-23 03:46:34,847 INFO L354 Elim1Store]: treesize reduction 184, result has 10.2 percent of original size [2021-11-23 03:46:34,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 216 [2021-11-23 03:48:19,356 INFO L354 Elim1Store]: treesize reduction 162, result has 21.0 percent of original size [2021-11-23 03:48:19,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 200 [2021-11-23 03:48:32,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 145 [2021-11-23 03:48:32,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 141 [2021-11-23 03:48:32,299 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:48:32,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 93 [2021-11-23 03:48:38,939 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-23 03:48:38,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 224 treesize of output 200 [2021-11-23 03:48:38,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 182 [2021-11-23 03:48:39,121 INFO L354 Elim1Store]: treesize reduction 223, result has 20.4 percent of original size [2021-11-23 03:48:39,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 180 treesize of output 220 [2021-11-23 03:49:00,668 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:49:00,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 140 [2021-11-23 03:50:41,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:50:41,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 03:50:41,198 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:50:41,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 03:54:45,654 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-23 03:55:10,582 INFO L354 Elim1Store]: treesize reduction 112, result has 33.7 percent of original size [2021-11-23 03:55:10,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 169 treesize of output 211 [2021-11-23 03:55:10,771 INFO L354 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2021-11-23 03:55:10,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 193 treesize of output 189 [2021-11-23 03:56:12,467 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-23 03:56:14,477 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-23 03:56:14,764 INFO L354 Elim1Store]: treesize reduction 68, result has 36.4 percent of original size [2021-11-23 03:56:14,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 134 [2021-11-23 03:58:18,922 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-11-23 03:58:18,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 199 treesize of output 167 [2021-11-23 03:58:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 165 [2021-11-23 03:58:18,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:58:18,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:58:18,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:58:18,982 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 03:58:18,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 184 treesize of output 163 [2021-11-23 03:58:18,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:58:18,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:58:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:18,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:58:19,056 INFO L354 Elim1Store]: treesize reduction 126, result has 28.0 percent of original size [2021-11-23 03:58:19,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 169 treesize of output 160 [2021-11-23 03:58:39,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 262 [2021-11-23 03:58:39,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 256 [2021-11-23 03:58:49,910 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:58:49,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 100