./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_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_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/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_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/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_3128613e-0b02-47c6-9130-9fb66a7c1200/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 a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:34:42,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:34:42,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:34:42,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:34:42,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:34:42,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:34:42,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:34:42,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:34:42,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:34:42,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:34:42,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:34:42,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:34:42,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:34:42,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:34:42,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:34:42,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:34:42,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:34:42,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:34:42,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:34:42,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:34:42,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:34:42,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:34:42,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:34:42,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:34:42,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:34:42,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:34:42,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:34:42,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:34:42,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:34:42,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:34:42,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:34:42,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:34:42,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:34:42,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:34:42,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:34:42,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:34:42,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:34:42,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:34:42,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:34:42,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:34:42,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:34:42,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:34:42,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:34:42,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:34:42,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:34:42,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:34:42,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:34:42,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:34:42,249 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:34:42,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:34:42,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:34:42,250 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:34:42,251 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:34:42,251 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:34:42,251 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:34:42,251 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:34:42,252 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:34:42,252 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:34:42,252 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:34:42,252 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:34:42,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:34:42,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:34:42,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:34:42,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:34:42,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:34:42,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:34:42,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:34:42,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:34:42,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:34:42,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:34:42,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:34:42,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:42,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:34:42,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:34:42,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:34:42,258 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:34:42,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:34:42,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:34:42,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:34:42,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:34:42,259 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_3128613e-0b02-47c6-9130-9fb66a7c1200/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 [2021-11-23 03:34:42,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:34:42,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:34:42,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:34:42,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:34:42,544 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:34:42,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2021-11-23 03:34:42,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/data/3215ee494/4cbee7f4fcc3400d92f6183519fc966e/FLAG33074441a [2021-11-23 03:34:43,444 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:34:43,445 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2021-11-23 03:34:43,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/data/3215ee494/4cbee7f4fcc3400d92f6183519fc966e/FLAG33074441a [2021-11-23 03:34:43,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/data/3215ee494/4cbee7f4fcc3400d92f6183519fc966e [2021-11-23 03:34:43,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:34:43,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:34:43,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:43,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:34:43,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:34:43,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:43" (1/1) ... [2021-11-23 03:34:43,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154a0768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:43, skipping insertion in model container [2021-11-23 03:34:43,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:43" (1/1) ... [2021-11-23 03:34:43,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:34:44,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:34:44,413 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_3128613e-0b02-47c6-9130-9fb66a7c1200/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2021-11-23 03:34:44,420 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_3128613e-0b02-47c6-9130-9fb66a7c1200/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2021-11-23 03:34:45,466 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,491 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,500 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,509 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,511 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:45,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:34:45,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:34:45,989 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:34:45,990 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:34:45,992 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:34:45,993 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:34:45,994 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:34:45,994 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:34:45,995 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:34:45,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:34:46,186 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:34:46,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,704 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:46,849 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:34:46,878 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_3128613e-0b02-47c6-9130-9fb66a7c1200/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2021-11-23 03:34:46,878 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_3128613e-0b02-47c6-9130-9fb66a7c1200/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2021-11-23 03:34:46,911 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,911 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,911 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,918 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:46,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:34:46,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:34:46,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:34:46,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:34:46,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:34:46,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:34:46,955 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:34:46,955 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:34:46,956 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:34:46,956 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:34:46,975 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:34:47,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,130 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:34:47,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:47,558 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:34:47,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47 WrapperNode [2021-11-23 03:34:47,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:47,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:47,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:34:47,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:34:47,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,828 INFO L137 Inliner]: procedures = 775, calls = 2489, calls flagged for inlining = 67, calls inlined = 21, statements flattened = 1294 [2021-11-23 03:34:47,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:47,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:34:47,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:34:47,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:34:47,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:47,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:34:47,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:34:47,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:34:47,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:34:47,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (1/1) ... [2021-11-23 03:34:48,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:48,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:34:48,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:34:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 03:34:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:34:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:34:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:34:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 03:34:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 03:34:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:34:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:34:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2021-11-23 03:34:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2021-11-23 03:34:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-23 03:34:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-23 03:34:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:34:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:34:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:34:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2021-11-23 03:34:48,085 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2021-11-23 03:34:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:34:48,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:34:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:34:48,085 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:34:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-23 03:34:48,086 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-23 03:34:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-23 03:34:48,086 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-23 03:34:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:34:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-23 03:34:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-23 03:34:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:34:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 03:34:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 03:34:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:34:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-23 03:34:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-23 03:34:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-23 03:34:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-23 03:34:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2021-11-23 03:34:48,089 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2021-11-23 03:34:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-23 03:34:48,089 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-23 03:34:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-23 03:34:48,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-23 03:34:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:34:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-23 03:34:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-23 03:34:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-23 03:34:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2021-11-23 03:34:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2021-11-23 03:34:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 03:34:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-23 03:34:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-23 03:34:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-23 03:34:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-23 03:34:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-23 03:34:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-23 03:34:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-23 03:34:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-23 03:34:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:34:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:34:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-23 03:34:48,093 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-23 03:34:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:34:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:34:48,093 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:34:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-23 03:34:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-23 03:34:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-23 03:34:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-23 03:34:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2021-11-23 03:34:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2021-11-23 03:34:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-23 03:34:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-23 03:34:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:34:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:34:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:34:48,559 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:34:48,562 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:34:48,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-23 03:34:48,891 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-23 03:34:49,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2021-11-23 03:34:49,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-11-23 03:34:50,501 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:34:50,780 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:34:50,780 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 03:34:50,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:50 BoogieIcfgContainer [2021-11-23 03:34:50,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:34:50,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:34:50,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:34:50,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:34:50,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:34:43" (1/3) ... [2021-11-23 03:34:50,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c789dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:50, skipping insertion in model container [2021-11-23 03:34:50,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:47" (2/3) ... [2021-11-23 03:34:50,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c789dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:50, skipping insertion in model container [2021-11-23 03:34:50,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:50" (3/3) ... [2021-11-23 03:34:50,797 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness.i [2021-11-23 03:34:50,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:34:50,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:34:50,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:34:50,890 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 03:34:50,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:34:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 167 states have (on average 1.251497005988024) internal successors, (209), 164 states have internal predecessors, (209), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-23 03:34:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 03:34:50,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:50,935 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-23 03:34:50,936 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:50,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1755351517, now seen corresponding path program 1 times [2021-11-23 03:34:50,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:50,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505197180] [2021-11-23 03:34:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:50,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:51,357 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:34:51,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250807045] [2021-11-23 03:34:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:51,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:34:51,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:51,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:34:51,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:34:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:51,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:34:51,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-23 03:34:52,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:34:52,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:52,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505197180] [2021-11-23 03:34:52,292 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:34:52,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250807045] [2021-11-23 03:34:52,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250807045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:52,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:52,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:34:52,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038176815] [2021-11-23 03:34:52,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:52,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:34:52,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:52,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:34:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:52,348 INFO L87 Difference]: Start difference. First operand has 281 states, 167 states have (on average 1.251497005988024) internal successors, (209), 164 states have internal predecessors, (209), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:34:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:54,173 INFO L93 Difference]: Finished difference Result 558 states and 783 transitions. [2021-11-23 03:34:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:34:54,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 89 [2021-11-23 03:34:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:54,192 INFO L225 Difference]: With dead ends: 558 [2021-11-23 03:34:54,192 INFO L226 Difference]: Without dead ends: 281 [2021-11-23 03:34:54,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 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 03:34:54,204 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 1 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:54,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1308 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:34:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-23 03:34:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-11-23 03:34:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 163 states have (on average 1.2269938650306749) internal successors, (200), 165 states have internal predecessors, (200), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (88), 85 states have call predecessors, (88), 84 states have call successors, (88) [2021-11-23 03:34:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 374 transitions. [2021-11-23 03:34:54,285 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 374 transitions. Word has length 89 [2021-11-23 03:34:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:54,286 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 374 transitions. [2021-11-23 03:34:54,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:34:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 374 transitions. [2021-11-23 03:34:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:34:54,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:54,292 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-23 03:34:54,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:34:54,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 03:34:54,518 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 670226085, now seen corresponding path program 1 times [2021-11-23 03:34:54,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:54,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100002230] [2021-11-23 03:34:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:54,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-23 03:34:55,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:55,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100002230] [2021-11-23 03:34:55,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100002230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:55,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:55,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:34:55,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739348225] [2021-11-23 03:34:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:55,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:34:55,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:34:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:34:55,066 INFO L87 Difference]: Start difference. First operand 281 states and 374 transitions. Second operand has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-23 03:34:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:58,677 INFO L93 Difference]: Finished difference Result 546 states and 725 transitions. [2021-11-23 03:34:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:34:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 93 [2021-11-23 03:34:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:58,683 INFO L225 Difference]: With dead ends: 546 [2021-11-23 03:34:58,683 INFO L226 Difference]: Without dead ends: 283 [2021-11-23 03:34:58,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:34:58,687 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 16 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:58,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1784 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 03:34:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-23 03:34:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2021-11-23 03:34:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 164 states have (on average 1.225609756097561) internal successors, (201), 167 states have internal predecessors, (201), 86 states have call successors, (86), 30 states have call predecessors, (86), 32 states have return successors, (89), 85 states have call predecessors, (89), 84 states have call successors, (89) [2021-11-23 03:34:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 376 transitions. [2021-11-23 03:34:58,725 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 376 transitions. Word has length 93 [2021-11-23 03:34:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:58,725 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 376 transitions. [2021-11-23 03:34:58,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-23 03:34:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 376 transitions. [2021-11-23 03:34:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 03:34:58,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:58,729 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-23 03:34:58,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:34:58,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:58,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:58,730 INFO L85 PathProgramCache]: Analyzing trace with hash 827076953, now seen corresponding path program 1 times [2021-11-23 03:34:58,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:58,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805191789] [2021-11-23 03:34:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:58,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-23 03:34:59,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:59,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805191789] [2021-11-23 03:34:59,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805191789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:59,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027782489] [2021-11-23 03:34:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:59,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:34:59,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:59,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:34:59,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:34:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:59,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 03:34:59,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:59,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 03:35:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 03:35:00,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:35:00,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027782489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:00,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:35:00,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2021-11-23 03:35:00,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117232872] [2021-11-23 03:35:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:00,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:35:00,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:00,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:35:00,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:35:00,476 INFO L87 Difference]: Start difference. First operand 283 states and 376 transitions. Second operand has 12 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-23 03:35:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:02,806 INFO L93 Difference]: Finished difference Result 559 states and 740 transitions. [2021-11-23 03:35:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:35:02,807 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 99 [2021-11-23 03:35:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:02,811 INFO L225 Difference]: With dead ends: 559 [2021-11-23 03:35:02,812 INFO L226 Difference]: Without dead ends: 288 [2021-11-23 03:35:02,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:35:02,815 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 20 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:02,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 1536 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 83 Unchecked, 2.3s Time] [2021-11-23 03:35:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-23 03:35:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-23 03:35:02,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 168 states have (on average 1.2202380952380953) internal successors, (205), 170 states have internal predecessors, (205), 87 states have call successors, (87), 32 states have call predecessors, (87), 32 states have return successors, (90), 85 states have call predecessors, (90), 85 states have call successors, (90) [2021-11-23 03:35:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 382 transitions. [2021-11-23 03:35:02,846 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 382 transitions. Word has length 99 [2021-11-23 03:35:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:02,847 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 382 transitions. [2021-11-23 03:35:02,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-23 03:35:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 382 transitions. [2021-11-23 03:35:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 03:35:02,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:02,850 INFO L514 BasicCegarLoop]: trace histogram [9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:02,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:03,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 03:35:03,078 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2005035473, now seen corresponding path program 1 times [2021-11-23 03:35:03,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:03,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092340713] [2021-11-23 03:35:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:03,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 03:35:03,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:03,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092340713] [2021-11-23 03:35:03,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092340713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:03,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:03,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:35:03,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837417081] [2021-11-23 03:35:03,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:03,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:03,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:03,455 INFO L87 Difference]: Start difference. First operand 288 states and 382 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, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:35:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:06,147 INFO L93 Difference]: Finished difference Result 536 states and 715 transitions. [2021-11-23 03:35:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:35:06,148 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, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 103 [2021-11-23 03:35:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:06,151 INFO L225 Difference]: With dead ends: 536 [2021-11-23 03:35:06,152 INFO L226 Difference]: Without dead ends: 290 [2021-11-23 03:35:06,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:35:06,154 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 0 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:06,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1205 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 03:35:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-23 03:35:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-23 03:35:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 169 states have (on average 1.2189349112426036) internal successors, (206), 172 states have internal predecessors, (206), 87 states have call successors, (87), 32 states have call predecessors, (87), 33 states have return successors, (96), 85 states have call predecessors, (96), 85 states have call successors, (96) [2021-11-23 03:35:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 389 transitions. [2021-11-23 03:35:06,183 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 389 transitions. Word has length 103 [2021-11-23 03:35:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:06,184 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 389 transitions. [2021-11-23 03:35:06,184 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, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:35:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 389 transitions. [2021-11-23 03:35:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 03:35:06,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:06,186 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 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] [2021-11-23 03:35:06,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:35:06,187 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -307889915, now seen corresponding path program 1 times [2021-11-23 03:35:06,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806091567] [2021-11-23 03:35:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:06,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-23 03:35:06,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:06,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806091567] [2021-11-23 03:35:06,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806091567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:06,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:06,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:35:06,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324964824] [2021-11-23 03:35:06,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:06,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:06,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:06,525 INFO L87 Difference]: Start difference. First operand 290 states and 389 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2021-11-23 03:35:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:08,947 INFO L93 Difference]: Finished difference Result 298 states and 396 transitions. [2021-11-23 03:35:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:35:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 107 [2021-11-23 03:35:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:08,951 INFO L225 Difference]: With dead ends: 298 [2021-11-23 03:35:08,951 INFO L226 Difference]: Without dead ends: 296 [2021-11-23 03:35:08,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 03:35:08,953 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 8 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:08,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1277 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:35:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-23 03:35:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 294. [2021-11-23 03:35:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 172 states have (on average 1.2151162790697674) internal successors, (209), 175 states have internal predecessors, (209), 87 states have call successors, (87), 33 states have call predecessors, (87), 34 states have return successors, (96), 85 states have call predecessors, (96), 85 states have call successors, (96) [2021-11-23 03:35:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 392 transitions. [2021-11-23 03:35:08,980 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 392 transitions. Word has length 107 [2021-11-23 03:35:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:08,981 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 392 transitions. [2021-11-23 03:35:08,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2021-11-23 03:35:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 392 transitions. [2021-11-23 03:35:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 03:35:08,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:08,983 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:08,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:35:08,984 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash -660957093, now seen corresponding path program 1 times [2021-11-23 03:35:08,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:08,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596172582] [2021-11-23 03:35:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:08,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 03:35:09,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:09,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596172582] [2021-11-23 03:35:09,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596172582] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:09,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141942623] [2021-11-23 03:35:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:09,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:09,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:09,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:09,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:35:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:10,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-23 03:35:10,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-23 03:35:10,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:35:10,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141942623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:10,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:35:10,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2021-11-23 03:35:10,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539125776] [2021-11-23 03:35:10,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:10,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:35:10,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:10,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:35:10,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:35:10,807 INFO L87 Difference]: Start difference. First operand 294 states and 392 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-23 03:35:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:13,823 INFO L93 Difference]: Finished difference Result 582 states and 774 transitions. [2021-11-23 03:35:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:35:13,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 116 [2021-11-23 03:35:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:13,827 INFO L225 Difference]: With dead ends: 582 [2021-11-23 03:35:13,827 INFO L226 Difference]: Without dead ends: 296 [2021-11-23 03:35:13,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:35:13,830 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 19 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:13,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1165 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:35:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-23 03:35:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-23 03:35:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 177 states have internal predecessors, (210), 87 states have call successors, (87), 33 states have call predecessors, (87), 35 states have return successors, (97), 85 states have call predecessors, (97), 85 states have call successors, (97) [2021-11-23 03:35:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 394 transitions. [2021-11-23 03:35:13,855 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 394 transitions. Word has length 116 [2021-11-23 03:35:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:13,856 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 394 transitions. [2021-11-23 03:35:13,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-23 03:35:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 394 transitions. [2021-11-23 03:35:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 03:35:13,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:13,859 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:13,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:14,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:14,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:14,075 INFO L85 PathProgramCache]: Analyzing trace with hash -629247859, now seen corresponding path program 1 times [2021-11-23 03:35:14,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:14,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092628848] [2021-11-23 03:35:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:14,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:14,133 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:35:14,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308207534] [2021-11-23 03:35:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:14,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:14,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:14,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:14,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:35:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:14,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 03:35:14,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 03:35:15,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-23 03:35:15,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:15,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092628848] [2021-11-23 03:35:15,805 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:35:15,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308207534] [2021-11-23 03:35:15,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308207534] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:15,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:35:15,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2021-11-23 03:35:15,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996506228] [2021-11-23 03:35:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:15,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:15,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:35:15,808 INFO L87 Difference]: Start difference. First operand 296 states and 394 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-23 03:35:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:19,318 INFO L93 Difference]: Finished difference Result 304 states and 401 transitions. [2021-11-23 03:35:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:35:19,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 121 [2021-11-23 03:35:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:19,322 INFO L225 Difference]: With dead ends: 304 [2021-11-23 03:35:19,322 INFO L226 Difference]: Without dead ends: 302 [2021-11-23 03:35:19,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:35:19,325 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 6 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:19,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1282 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 03:35:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-23 03:35:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2021-11-23 03:35:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 180 states have internal predecessors, (213), 87 states have call successors, (87), 34 states have call predecessors, (87), 36 states have return successors, (97), 85 states have call predecessors, (97), 85 states have call successors, (97) [2021-11-23 03:35:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 397 transitions. [2021-11-23 03:35:19,356 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 397 transitions. Word has length 121 [2021-11-23 03:35:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:19,357 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 397 transitions. [2021-11-23 03:35:19,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-23 03:35:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 397 transitions. [2021-11-23 03:35:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-23 03:35:19,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:19,362 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:19,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:19,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:19,590 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:19,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1963608419, now seen corresponding path program 1 times [2021-11-23 03:35:19,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:19,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903117096] [2021-11-23 03:35:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:19,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:19,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:35:19,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779291486] [2021-11-23 03:35:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:19,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:19,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:19,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:35:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:20,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:35:20,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-23 03:35:20,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:35:20,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:20,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903117096] [2021-11-23 03:35:20,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:35:20,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779291486] [2021-11-23 03:35:20,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779291486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:20,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:20,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:35:20,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050013388] [2021-11-23 03:35:20,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:20,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:20,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:20,504 INFO L87 Difference]: Start difference. First operand 300 states and 397 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:35:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:22,573 INFO L93 Difference]: Finished difference Result 392 states and 516 transitions. [2021-11-23 03:35:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:35:22,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 130 [2021-11-23 03:35:22,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:22,576 INFO L225 Difference]: With dead ends: 392 [2021-11-23 03:35:22,577 INFO L226 Difference]: Without dead ends: 332 [2021-11-23 03:35:22,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 03:35:22,578 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 27 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:22,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1333 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 03:35:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-23 03:35:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 304. [2021-11-23 03:35:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 179 states have (on average 1.2067039106145252) internal successors, (216), 183 states have internal predecessors, (216), 87 states have call successors, (87), 34 states have call predecessors, (87), 37 states have return successors, (98), 86 states have call predecessors, (98), 85 states have call successors, (98) [2021-11-23 03:35:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 401 transitions. [2021-11-23 03:35:22,600 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 401 transitions. Word has length 130 [2021-11-23 03:35:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:22,601 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 401 transitions. [2021-11-23 03:35:22,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:35:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 401 transitions. [2021-11-23 03:35:22,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-23 03:35:22,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:22,605 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:22,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:22,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:22,826 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1372037724, now seen corresponding path program 1 times [2021-11-23 03:35:22,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:22,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448902128] [2021-11-23 03:35:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:22,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:22,897 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:35:22,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112262540] [2021-11-23 03:35:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:22,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:22,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:22,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:22,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 03:35:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:23,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:35:23,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-23 03:35:23,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:35:23,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:23,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448902128] [2021-11-23 03:35:23,750 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:35:23,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112262540] [2021-11-23 03:35:23,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112262540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:23,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:23,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:35:23,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019378718] [2021-11-23 03:35:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:23,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:35:23,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:35:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:35:23,754 INFO L87 Difference]: Start difference. First operand 304 states and 401 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:35:25,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:25,550 INFO L93 Difference]: Finished difference Result 500 states and 655 transitions. [2021-11-23 03:35:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 132 [2021-11-23 03:35:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:25,554 INFO L225 Difference]: With dead ends: 500 [2021-11-23 03:35:25,555 INFO L226 Difference]: Without dead ends: 305 [2021-11-23 03:35:25,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:35:25,557 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:25,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 644 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:35:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-23 03:35:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2021-11-23 03:35:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 180 states have (on average 1.2055555555555555) internal successors, (217), 184 states have internal predecessors, (217), 87 states have call successors, (87), 34 states have call predecessors, (87), 37 states have return successors, (98), 86 states have call predecessors, (98), 85 states have call successors, (98) [2021-11-23 03:35:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 402 transitions. [2021-11-23 03:35:25,578 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 402 transitions. Word has length 132 [2021-11-23 03:35:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:25,579 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 402 transitions. [2021-11-23 03:35:25,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:35:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 402 transitions. [2021-11-23 03:35:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 03:35:25,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:25,583 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:25,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:25,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:25,806 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash -94620496, now seen corresponding path program 1 times [2021-11-23 03:35:25,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:25,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755592026] [2021-11-23 03:35:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:25,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:25,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:35:25,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065015488] [2021-11-23 03:35:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:25,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:25,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:25,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3128613e-0b02-47c6-9130-9fb66a7c1200/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 03:35:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:26,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-23 03:35:26,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:26,637 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 15 treesize of output 11 [2021-11-23 03:35:26,640 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 7 treesize of output 3 [2021-11-23 03:35:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-23 03:35:26,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-23 03:35:27,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755592026] [2021-11-23 03:35:27,648 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:35:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065015488] [2021-11-23 03:35:27,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065015488] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:35:27,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1780346189] [2021-11-23 03:35:27,686 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2021-11-23 03:35:27,686 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:35:27,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:35:27,699 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:35:27,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:35:30,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:35:30,953 INFO L244 Elim1Store]: Index analysis took 467 ms [2021-11-23 03:36:03,470 WARN L227 SmtUtils]: Spent 32.42s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:36:03,476 INFO L354 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2021-11-23 03:36:03,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2021-11-23 03:36:06,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:36:06,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19504 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 1582 [2021-11-23 03:37:54,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:54,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:54,325 INFO L244 Elim1Store]: Index analysis took 381 ms [2021-11-23 03:38:13,822 WARN L227 SmtUtils]: Spent 19.45s on a formula simplification. DAG size of input: 1776 DAG size of output: 1183 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:38:13,825 INFO L354 Elim1Store]: treesize reduction 1974, result has 47.3 percent of original size [2021-11-23 03:38:13,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 198 select indices, 198 select index equivalence classes, 19506 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 197 case distinctions, treesize of input 997 treesize of output 2374 [2021-11-23 03:38:18,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:19,213 INFO L244 Elim1Store]: Index analysis took 1174 ms [2021-11-23 03:38:55,443 WARN L227 SmtUtils]: Spent 36.18s on a formula simplification. DAG size of input: 2172 DAG size of output: 1185 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:38:55,446 INFO L354 Elim1Store]: treesize reduction 3546, result has 33.3 percent of original size [2021-11-23 03:38:55,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 200 select indices, 200 select index equivalence classes, 19703 disjoint index pairs (out of 19900 index pairs), introduced 200 new quantified variables, introduced 394 case distinctions, treesize of input 1007 treesize of output 2389 [2021-11-23 03:38:57,816 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-23 03:38:57,947 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-23 03:38:58,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:38:58,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:38:58,165 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 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-23 03:38:58,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 24 treesize of output 21 [2021-11-23 03:38:58,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:38:58,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:38:58,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:38:58,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:38:58,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:38:58,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:38:58,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:38:58,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:38:58,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 25 treesize of output 22 [2021-11-23 03:38:58,413 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 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:38:58,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:38:58,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:38:58,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:38:58,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:38:58,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 03:38:58,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-23 03:38:58,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-23 03:38:58,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 03:38:58,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-23 03:38:58,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-23 03:38:58,643 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:38:58,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-11-23 03:38:58,737 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-23 03:38:59,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:38:59,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:38:59,393 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:38:59,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 treesize of output 26 [2021-11-23 03:38:59,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-23 03:38:59,559 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:38:59,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 treesize of output 26 [2021-11-23 03:38:59,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-23 03:38:59,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:59,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2021-11-23 03:38:59,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:59,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-23 03:38:59,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:59,760 INFO L354 Elim1Store]: treesize reduction 59, result has 15.7 percent of original size [2021-11-23 03:38:59,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 53 [2021-11-23 03:38:59,800 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 03:38:59,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 58 [2021-11-23 03:38:59,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:59,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-23 03:39:08,539 INFO L354 Elim1Store]: treesize reduction 140, result has 42.6 percent of original size [2021-11-23 03:39:08,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 858 treesize of output 902 [2021-11-23 03:39:08,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:08,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:08,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:08,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:39:09,526 INFO L354 Elim1Store]: treesize reduction 194, result has 39.2 percent of original size [2021-11-23 03:39:09,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 1296 treesize of output 1095 [2021-11-23 03:39:09,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:09,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:09,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:39:09,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:09,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:09,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:39:11,865 INFO L354 Elim1Store]: treesize reduction 302, result has 38.2 percent of original size [2021-11-23 03:39:11,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 1094 treesize of output 985 [2021-11-23 03:39:11,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:12,844 INFO L354 Elim1Store]: treesize reduction 272, result has 33.2 percent of original size [2021-11-23 03:39:12,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 985 treesize of output 1119 [2021-11-23 03:39:13,183 INFO L354 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2021-11-23 03:39:13,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1150 treesize of output 1132 [2021-11-23 03:39:39,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:39:39,982 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:39:39,983 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 27 treesize of output 17 [2021-11-23 03:39:40,043 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 03:39:40,044 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 27 treesize of output 17 [2021-11-23 03:39:40,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:40,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:40,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:40,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:40,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:40,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:39:40,326 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:39:40,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 308 treesize of output 324 [2021-11-23 03:40:52,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:52,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:52,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:40:52,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:40:52,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 308 treesize of output 350 [2021-11-23 03:45:57,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:45:57,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:45:57,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:45:57,975 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:45:57,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 293 treesize of output 301 [2021-11-23 03:46:31,023 WARN L234 Elim1Store]: Array PQE input equivalent to false