./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_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_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/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_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/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_2fbc6ade-df3c-41b8-9bce-615249566e2c/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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:55:00,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:55:00,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:55:00,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:55:00,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:55:00,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:55:00,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:55:00,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:55:00,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:55:00,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:55:00,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:55:00,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:55:00,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:55:00,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:55:00,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:55:00,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:55:00,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:55:00,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:55:00,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:55:00,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:55:00,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:55:00,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:55:00,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:55:00,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:55:00,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:55:00,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:55:00,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:55:00,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:55:00,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:55:00,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:55:00,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:55:00,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:55:00,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:55:00,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:55:00,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:55:00,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:55:00,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:55:00,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:55:00,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:55:00,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:55:00,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:55:00,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 01:55:00,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:55:00,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:55:00,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:55:00,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:55:00,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:55:00,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:55:00,451 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:55:00,451 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:55:00,452 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:55:00,452 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:55:00,452 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:55:00,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:55:00,452 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:55:00,452 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:55:00,453 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:55:00,453 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:55:00,453 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:55:00,453 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:55:00,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:55:00,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:55:00,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:55:00,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:55:00,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:55:00,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:55:00,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:55:00,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:55:00,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:55:00,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:55:00,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:55:00,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:55:00,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:55:00,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:55:00,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:55:00,457 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:55:00,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:55:00,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:55:00,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:55:00,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:55:00,458 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_2fbc6ade-df3c-41b8-9bce-615249566e2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-23 01:55:00,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:55:00,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:55:00,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:55:00,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:55:00,736 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:55:00,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-23 01:55:00,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/data/9a47a60fe/95b1cc39aa2c4641b69d9e1ff65dc568/FLAGc06dee4f9 [2021-11-23 01:55:01,702 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:55:01,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-23 01:55:01,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/data/9a47a60fe/95b1cc39aa2c4641b69d9e1ff65dc568/FLAGc06dee4f9 [2021-11-23 01:55:02,189 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/data/9a47a60fe/95b1cc39aa2c4641b69d9e1ff65dc568 [2021-11-23 01:55:02,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:55:02,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:55:02,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:55:02,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:55:02,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:55:02,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:02" (1/1) ... [2021-11-23 01:55:02,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60de7d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:02, skipping insertion in model container [2021-11-23 01:55:02,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:02" (1/1) ... [2021-11-23 01:55:02,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:55:02,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:55:02,637 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_2fbc6ade-df3c-41b8-9bce-615249566e2c/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-23 01:55:02,645 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_2fbc6ade-df3c-41b8-9bce-615249566e2c/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-23 01:55:03,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:03,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 01:55:04,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 01:55:04,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 01:55:04,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 01:55:04,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 01:55:04,226 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 01:55:04,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 01:55:04,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 01:55:04,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 01:55:04,229 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 01:55:04,473 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 01:55:04,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,941 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:04,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:55:05,099 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:55:05,130 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_2fbc6ade-df3c-41b8-9bce-615249566e2c/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-23 01:55:05,130 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_2fbc6ade-df3c-41b8-9bce-615249566e2c/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-23 01:55:05,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,212 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,213 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,213 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,214 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,214 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 01:55:05,249 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 01:55:05,250 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 01:55:05,251 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 01:55:05,252 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 01:55:05,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 01:55:05,279 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 01:55:05,279 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 01:55:05,279 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 01:55:05,280 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 01:55:05,310 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 01:55:05,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,430 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,449 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,449 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,450 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,450 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,451 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,451 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,452 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:55:05,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:55:05,994 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:55:05,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05 WrapperNode [2021-11-23 01:55:05,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:55:05,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:55:05,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:55:05,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:55:06,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,300 INFO L137 Inliner]: procedures = 775, calls = 2499, calls flagged for inlining = 69, calls inlined = 19, statements flattened = 1070 [2021-11-23 01:55:06,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:55:06,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:55:06,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:55:06,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:55:06,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:55:06,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:55:06,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:55:06,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:55:06,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (1/1) ... [2021-11-23 01:55:06,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:55:06,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:06,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:55:06,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:55:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 01:55:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 01:55:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 01:55:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:55:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 01:55:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 01:55:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 01:55:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 01:55:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-23 01:55:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-23 01:55:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:55:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:55:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:55:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:55:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:55:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 01:55:06,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 01:55:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-23 01:55:06,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-23 01:55:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:55:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-23 01:55:06,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-23 01:55:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:55:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 01:55:06,571 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 01:55:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:55:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-23 01:55:06,572 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-23 01:55:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-23 01:55:06,572 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-23 01:55:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-23 01:55:06,573 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-23 01:55:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-23 01:55:06,573 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-23 01:55:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-23 01:55:06,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-23 01:55:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:55:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-23 01:55:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-23 01:55:06,578 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-23 01:55:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:55:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:55:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-23 01:55:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-23 01:55:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-23 01:55:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-23 01:55:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-23 01:55:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-23 01:55:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 01:55:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 01:55:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-23 01:55:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-23 01:55:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:55:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 01:55:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 01:55:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-23 01:55:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-23 01:55:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-23 01:55:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-23 01:55:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2021-11-23 01:55:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2021-11-23 01:55:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-23 01:55:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-23 01:55:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-23 01:55:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-23 01:55:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:55:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:55:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:55:07,045 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:55:07,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:55:07,355 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2021-11-23 01:55:07,355 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-23 01:55:07,381 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-23 01:55:07,418 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-23 01:55:08,269 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !true; [2021-11-23 01:55:08,270 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !true; [2021-11-23 01:55:08,311 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:55:08,487 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:55:08,487 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-23 01:55:08,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:08 BoogieIcfgContainer [2021-11-23 01:55:08,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:55:08,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:55:08,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:55:08,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:55:08,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:02" (1/3) ... [2021-11-23 01:55:08,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56499288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:08, skipping insertion in model container [2021-11-23 01:55:08,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:05" (2/3) ... [2021-11-23 01:55:08,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56499288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:08, skipping insertion in model container [2021-11-23 01:55:08,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:08" (3/3) ... [2021-11-23 01:55:08,503 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2021-11-23 01:55:08,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:55:08,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:55:08,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:55:08,594 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 01:55:08,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:55:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-23 01:55:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 01:55:08,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:08,656 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 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] [2021-11-23 01:55:08,657 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1987443898, now seen corresponding path program 1 times [2021-11-23 01:55:08,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:08,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392945046] [2021-11-23 01:55:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:08,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:09,027 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 01:55:09,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693138074] [2021-11-23 01:55:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:09,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:09,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:09,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:55:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:09,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2374 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:55:09,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-23 01:55:10,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:55:10,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:10,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392945046] [2021-11-23 01:55:10,098 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 01:55:10,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693138074] [2021-11-23 01:55:10,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693138074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:10,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:10,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:55:10,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473460363] [2021-11-23 01:55:10,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:10,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:55:10,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:55:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:55:10,138 INFO L87 Difference]: Start difference. First operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 01:55:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:10,809 INFO L93 Difference]: Finished difference Result 488 states and 698 transitions. [2021-11-23 01:55:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:55:10,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 127 [2021-11-23 01:55:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:10,833 INFO L225 Difference]: With dead ends: 488 [2021-11-23 01:55:10,834 INFO L226 Difference]: Without dead ends: 259 [2021-11-23 01:55:10,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 01:55:10,852 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:10,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1208 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 01:55:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-23 01:55:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-11-23 01:55:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 145 states have internal predecessors, (170), 87 states have call successors, (87), 27 states have call predecessors, (87), 28 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2021-11-23 01:55:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 343 transitions. [2021-11-23 01:55:10,950 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 343 transitions. Word has length 127 [2021-11-23 01:55:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:10,952 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 343 transitions. [2021-11-23 01:55:10,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 01:55:10,952 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 343 transitions. [2021-11-23 01:55:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 01:55:10,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:10,956 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 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] [2021-11-23 01:55:11,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 01:55:11,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:11,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1602005392, now seen corresponding path program 1 times [2021-11-23 01:55:11,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:11,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472738666] [2021-11-23 01:55:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:11,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-23 01:55:11,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:11,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472738666] [2021-11-23 01:55:11,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472738666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:11,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:11,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:55:11,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942024092] [2021-11-23 01:55:11,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:11,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:55:11,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:55:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:55:11,728 INFO L87 Difference]: Start difference. First operand 259 states and 343 transitions. Second operand has 5 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 01:55:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:12,221 INFO L93 Difference]: Finished difference Result 434 states and 584 transitions. [2021-11-23 01:55:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:55:12,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 131 [2021-11-23 01:55:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:12,228 INFO L225 Difference]: With dead ends: 434 [2021-11-23 01:55:12,228 INFO L226 Difference]: Without dead ends: 262 [2021-11-23 01:55:12,231 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 01:55:12,234 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:12,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1078 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 01:55:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-23 01:55:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2021-11-23 01:55:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 144 states have (on average 1.1875) internal successors, (171), 147 states have internal predecessors, (171), 87 states have call successors, (87), 27 states have call predecessors, (87), 29 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2021-11-23 01:55:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2021-11-23 01:55:12,286 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 131 [2021-11-23 01:55:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:12,288 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2021-11-23 01:55:12,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 01:55:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2021-11-23 01:55:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 01:55:12,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:12,296 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 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] [2021-11-23 01:55:12,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:55:12,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:12,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2076489748, now seen corresponding path program 1 times [2021-11-23 01:55:12,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:12,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321300577] [2021-11-23 01:55:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:12,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-23 01:55:12,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:12,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321300577] [2021-11-23 01:55:12,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321300577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:12,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588179071] [2021-11-23 01:55:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:12,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:12,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:12,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:12,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 01:55:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:13,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 01:55:13,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:13,713 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 01:55:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-23 01:55:14,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:55:14,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588179071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:14,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:55:14,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2021-11-23 01:55:14,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252297506] [2021-11-23 01:55:14,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:14,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 01:55:14,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 01:55:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-23 01:55:14,454 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-23 01:55:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:15,261 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2021-11-23 01:55:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 01:55:15,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 135 [2021-11-23 01:55:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:15,265 INFO L225 Difference]: With dead ends: 476 [2021-11-23 01:55:15,265 INFO L226 Difference]: Without dead ends: 263 [2021-11-23 01:55:15,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-23 01:55:15,267 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 40 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:15,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2090 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 287 Invalid, 0 Unknown, 210 Unchecked, 0.7s Time] [2021-11-23 01:55:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-23 01:55:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-11-23 01:55:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 146 states have (on average 1.1849315068493151) internal successors, (173), 148 states have internal predecessors, (173), 87 states have call successors, (87), 28 states have call predecessors, (87), 29 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2021-11-23 01:55:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 353 transitions. [2021-11-23 01:55:15,286 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 353 transitions. Word has length 135 [2021-11-23 01:55:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:15,287 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 353 transitions. [2021-11-23 01:55:15,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-23 01:55:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 353 transitions. [2021-11-23 01:55:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-23 01:55:15,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:15,290 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:15,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 01:55:15,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:15,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1309101116, now seen corresponding path program 1 times [2021-11-23 01:55:15,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:15,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852831809] [2021-11-23 01:55:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:15,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-23 01:55:15,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:15,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852831809] [2021-11-23 01:55:15,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852831809] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:15,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673818848] [2021-11-23 01:55:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:15,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:15,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:15,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:15,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 01:55:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:16,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 01:55:16,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:16,622 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 01:55:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-23 01:55:17,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:55:17,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673818848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:17,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:55:17,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2021-11-23 01:55:17,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134435987] [2021-11-23 01:55:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:17,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 01:55:17,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 01:55:17,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-23 01:55:17,090 INFO L87 Difference]: Start difference. First operand 263 states and 353 transitions. Second operand has 12 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-23 01:55:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:17,534 INFO L93 Difference]: Finished difference Result 482 states and 653 transitions. [2021-11-23 01:55:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 01:55:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 141 [2021-11-23 01:55:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:17,538 INFO L225 Difference]: With dead ends: 482 [2021-11-23 01:55:17,538 INFO L226 Difference]: Without dead ends: 266 [2021-11-23 01:55:17,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-11-23 01:55:17,541 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 43 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:17,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1388 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 145 Unchecked, 0.4s Time] [2021-11-23 01:55:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-23 01:55:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-23 01:55:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 150 states have internal predecessors, (175), 88 states have call successors, (88), 29 states have call predecessors, (88), 29 states have return successors, (94), 86 states have call predecessors, (94), 86 states have call successors, (94) [2021-11-23 01:55:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2021-11-23 01:55:17,563 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 357 transitions. Word has length 141 [2021-11-23 01:55:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:17,563 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 357 transitions. [2021-11-23 01:55:17,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-23 01:55:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 357 transitions. [2021-11-23 01:55:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-23 01:55:17,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:17,567 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:17,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 01:55:17,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:17,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:17,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:17,783 INFO L85 PathProgramCache]: Analyzing trace with hash -220983736, now seen corresponding path program 1 times [2021-11-23 01:55:17,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:17,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567140274] [2021-11-23 01:55:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:17,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-23 01:55:18,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:18,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567140274] [2021-11-23 01:55:18,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567140274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:18,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757780410] [2021-11-23 01:55:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:18,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:18,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:18,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 01:55:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:18,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 01:55:18,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-23 01:55:19,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:55:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-23 01:55:19,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757780410] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:19,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 01:55:19,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 7] total 20 [2021-11-23 01:55:19,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658042596] [2021-11-23 01:55:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:19,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:55:19,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:55:19,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-23 01:55:19,768 INFO L87 Difference]: Start difference. First operand 266 states and 357 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-23 01:55:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:20,209 INFO L93 Difference]: Finished difference Result 274 states and 364 transitions. [2021-11-23 01:55:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:55:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 145 [2021-11-23 01:55:20,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:20,213 INFO L225 Difference]: With dead ends: 274 [2021-11-23 01:55:20,213 INFO L226 Difference]: Without dead ends: 272 [2021-11-23 01:55:20,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-23 01:55:20,214 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 9 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:20,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1174 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 01:55:20,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-23 01:55:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2021-11-23 01:55:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 151 states have (on average 1.1788079470198676) internal successors, (178), 153 states have internal predecessors, (178), 88 states have call successors, (88), 30 states have call predecessors, (88), 30 states have return successors, (94), 86 states have call predecessors, (94), 86 states have call successors, (94) [2021-11-23 01:55:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 360 transitions. [2021-11-23 01:55:20,235 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 360 transitions. Word has length 145 [2021-11-23 01:55:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:20,236 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 360 transitions. [2021-11-23 01:55:20,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-23 01:55:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 360 transitions. [2021-11-23 01:55:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-23 01:55:20,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:20,240 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:20,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 01:55:20,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:20,468 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2902764, now seen corresponding path program 1 times [2021-11-23 01:55:20,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:20,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897724282] [2021-11-23 01:55:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:20,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-23 01:55:20,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:20,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897724282] [2021-11-23 01:55:20,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897724282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:20,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:20,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 01:55:20,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989855842] [2021-11-23 01:55:20,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:20,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 01:55:20,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 01:55:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-23 01:55:20,993 INFO L87 Difference]: Start difference. First operand 270 states and 360 transitions. Second operand has 13 states, 10 states have (on average 6.2) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 7 states have call successors, (35) [2021-11-23 01:55:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:22,021 INFO L93 Difference]: Finished difference Result 477 states and 649 transitions. [2021-11-23 01:55:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 01:55:22,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 6.2) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 7 states have call successors, (35) Word has length 154 [2021-11-23 01:55:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:22,026 INFO L225 Difference]: With dead ends: 477 [2021-11-23 01:55:22,027 INFO L226 Difference]: Without dead ends: 291 [2021-11-23 01:55:22,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-23 01:55:22,029 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 113 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:22,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 2587 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 01:55:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-23 01:55:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 272. [2021-11-23 01:55:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 152 states have (on average 1.1776315789473684) internal successors, (179), 155 states have internal predecessors, (179), 88 states have call successors, (88), 30 states have call predecessors, (88), 31 states have return successors, (98), 86 states have call predecessors, (98), 86 states have call successors, (98) [2021-11-23 01:55:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 365 transitions. [2021-11-23 01:55:22,064 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 365 transitions. Word has length 154 [2021-11-23 01:55:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:22,065 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 365 transitions. [2021-11-23 01:55:22,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 6.2) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 7 states have call successors, (35) [2021-11-23 01:55:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 365 transitions. [2021-11-23 01:55:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 01:55:22,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:22,068 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:22,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:55:22,069 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:22,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1949400668, now seen corresponding path program 1 times [2021-11-23 01:55:22,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:22,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679455817] [2021-11-23 01:55:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:22,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-23 01:55:22,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:22,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679455817] [2021-11-23 01:55:22,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679455817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:22,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352978307] [2021-11-23 01:55:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:22,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:22,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:22,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 01:55:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:23,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 01:55:23,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-23 01:55:24,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:55:24,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352978307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:24,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:55:24,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2021-11-23 01:55:24,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268562875] [2021-11-23 01:55:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:24,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 01:55:24,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 01:55:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-23 01:55:24,500 INFO L87 Difference]: Start difference. First operand 272 states and 365 transitions. Second operand has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-23 01:55:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:24,967 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2021-11-23 01:55:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 01:55:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 5 states have call successors, (36) Word has length 160 [2021-11-23 01:55:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:24,971 INFO L225 Difference]: With dead ends: 470 [2021-11-23 01:55:24,971 INFO L226 Difference]: Without dead ends: 274 [2021-11-23 01:55:24,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-11-23 01:55:24,973 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 65 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:24,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1827 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 191 Invalid, 0 Unknown, 219 Unchecked, 0.4s Time] [2021-11-23 01:55:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-23 01:55:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2021-11-23 01:55:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 152 states have (on average 1.1776315789473684) internal successors, (179), 154 states have internal predecessors, (179), 87 states have call successors, (87), 30 states have call predecessors, (87), 31 states have return successors, (96), 86 states have call predecessors, (96), 85 states have call successors, (96) [2021-11-23 01:55:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2021-11-23 01:55:24,993 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 160 [2021-11-23 01:55:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:24,994 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2021-11-23 01:55:24,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-23 01:55:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2021-11-23 01:55:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-23 01:55:24,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:24,997 INFO L514 BasicCegarLoop]: trace histogram [15, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 01:55:25,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 01:55:25,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 01:55:25,224 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1691924128, now seen corresponding path program 2 times [2021-11-23 01:55:25,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:25,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768630307] [2021-11-23 01:55:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:25,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-11-23 01:55:25,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768630307] [2021-11-23 01:55:25,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768630307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680764212] [2021-11-23 01:55:25,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 01:55:25,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:25,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:25,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:25,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 01:55:26,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 01:55:26,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:55:26,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 01:55:26,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-23 01:55:26,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:55:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-23 01:55:27,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680764212] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:27,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 01:55:27,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 8] total 20 [2021-11-23 01:55:27,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833306124] [2021-11-23 01:55:27,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:27,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:55:27,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:27,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:55:27,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-23 01:55:27,067 INFO L87 Difference]: Start difference. First operand 271 states and 362 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-23 01:55:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:27,428 INFO L93 Difference]: Finished difference Result 279 states and 369 transitions. [2021-11-23 01:55:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:55:27,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 164 [2021-11-23 01:55:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:27,432 INFO L225 Difference]: With dead ends: 279 [2021-11-23 01:55:27,432 INFO L226 Difference]: Without dead ends: 277 [2021-11-23 01:55:27,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-23 01:55:27,433 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 6 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:27,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1180 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 01:55:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-23 01:55:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2021-11-23 01:55:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 155 states have (on average 1.1741935483870967) internal successors, (182), 157 states have internal predecessors, (182), 87 states have call successors, (87), 31 states have call predecessors, (87), 32 states have return successors, (96), 86 states have call predecessors, (96), 85 states have call successors, (96) [2021-11-23 01:55:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 365 transitions. [2021-11-23 01:55:27,454 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 365 transitions. Word has length 164 [2021-11-23 01:55:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:27,455 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 365 transitions. [2021-11-23 01:55:27,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-23 01:55:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 365 transitions. [2021-11-23 01:55:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-23 01:55:27,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:27,458 INFO L514 BasicCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 01:55:27,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 01:55:27,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 01:55:27,684 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:55:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1453411431, now seen corresponding path program 1 times [2021-11-23 01:55:27,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:27,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099538286] [2021-11-23 01:55:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:27,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-23 01:55:28,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:28,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099538286] [2021-11-23 01:55:28,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099538286] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:28,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566708362] [2021-11-23 01:55:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:28,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:28,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:28,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fbc6ade-df3c-41b8-9bce-615249566e2c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 01:55:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:28,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-23 01:55:28,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:29,259 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 21 treesize of output 17 [2021-11-23 01:55:32,262 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 01:55:32,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 29 [2021-11-23 01:55:32,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:32,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:55:33,135 INFO L354 Elim1Store]: treesize reduction 851, result has 24.2 percent of original size [2021-11-23 01:55:33,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 11 new quantified variables, introduced 18 case distinctions, treesize of input 1749 treesize of output 722 [2021-11-23 01:55:33,195 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 7240 treesize of output 6728 [2021-11-23 01:55:33,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:33,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:33,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:33,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:55:33,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 851 treesize of output 961 [2021-11-23 01:55:36,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:36,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:36,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:36,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:36,721 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:55:36,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 645 treesize of output 781 [2021-11-23 01:55:38,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:38,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:39,094 INFO L354 Elim1Store]: treesize reduction 36, result has 85.2 percent of original size [2021-11-23 01:55:39,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 4672 treesize of output 4788 [2021-11-23 01:55:39,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:39,373 INFO L354 Elim1Store]: treesize reduction 44, result has 81.9 percent of original size [2021-11-23 01:55:39,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 4788 treesize of output 4832 [2021-11-23 01:55:39,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:39,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:55:39,676 INFO L354 Elim1Store]: treesize reduction 28, result has 88.5 percent of original size [2021-11-23 01:55:39,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 4832 treesize of output 4956