./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:22:07,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:22:07,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:22:07,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:22:07,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:22:07,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:22:07,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:22:07,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:22:07,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:22:07,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:22:07,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:22:07,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:22:07,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:22:07,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:22:07,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:22:07,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:22:07,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:22:07,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:22:07,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:22:07,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:22:07,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:22:07,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:22:07,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:22:07,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:22:07,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:22:07,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:22:07,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:22:08,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:22:08,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:22:08,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:22:08,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:22:08,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:22:08,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:22:08,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:22:08,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:22:08,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:22:08,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:22:08,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:22:08,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:22:08,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:22:08,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:22:08,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-23 03:22:08,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:22:08,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:22:08,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:22:08,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:22:08,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:22:08,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:22:08,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:22:08,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:22:08,036 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:22:08,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:22:08,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:22:08,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:22:08,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:22:08,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:22:08,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:22:08,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:22:08,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:22:08,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:22:08,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:22:08,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:22:08,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:22:08,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:22:08,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:22:08,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:22:08,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:22:08,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:22:08,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:22:08,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:22:08,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:22:08,041 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:22:08,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:22:08,041 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2022-11-23 03:22:08,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:22:08,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:22:08,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:22:08,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:22:08,364 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:22:08,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-11-23 03:22:11,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:22:12,011 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:22:12,013 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-11-23 03:22:12,098 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/data/f32060e3d/01920616b27945939955324f711d4e88/FLAGaade4237f [2022-11-23 03:22:12,131 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/data/f32060e3d/01920616b27945939955324f711d4e88 [2022-11-23 03:22:12,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:22:12,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:22:12,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:22:12,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:22:12,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:22:12,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:12" (1/1) ... [2022-11-23 03:22:12,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed3cfc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:12, skipping insertion in model container [2022-11-23 03:22:12,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:12" (1/1) ... [2022-11-23 03:22:12,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:22:12,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:22:12,582 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2022-11-23 03:22:12,594 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2022-11-23 03:22:13,877 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,881 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,883 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,884 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,885 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,904 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,905 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,916 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,920 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,922 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,923 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,924 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:13,924 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:14,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 03:22:14,429 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 03:22:14,430 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 03:22:14,431 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 03:22:14,433 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 03:22:14,434 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 03:22:14,435 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 03:22:14,435 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 03:22:14,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 03:22:14,437 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 03:22:14,635 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 03:22:14,971 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:14,972 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:14,993 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:14,994 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,000 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,000 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,014 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,015 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,016 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,017 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,017 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,018 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,019 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:22:15,140 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:22:15,171 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2022-11-23 03:22:15,172 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2022-11-23 03:22:15,220 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,220 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,221 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,221 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,222 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,229 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,230 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,231 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,233 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,235 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 03:22:15,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 03:22:15,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 03:22:15,276 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 03:22:15,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 03:22:15,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 03:22:15,279 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 03:22:15,280 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 03:22:15,280 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 03:22:15,281 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 03:22:15,308 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 03:22:15,408 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,409 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,476 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,477 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,480 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,481 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,492 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,493 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,494 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,494 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,495 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,496 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,496 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 03:22:15,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:22:15,921 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:22:15,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15 WrapperNode [2022-11-23 03:22:15,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:22:15,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:22:15,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:22:15,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:22:15,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,151 INFO L138 Inliner]: procedures = 774, calls = 2440, calls flagged for inlining = 66, calls inlined = 9, statements flattened = 598 [2022-11-23 03:22:16,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:22:16,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:22:16,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:22:16,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:22:16,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,245 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:22:16,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:22:16,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:22:16,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:22:16,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (1/1) ... [2022-11-23 03:22:16,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:22:16,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:16,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:22:16,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:22:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-23 03:22:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2022-11-23 03:22:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2022-11-23 03:22:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:22:16,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-23 03:22:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-23 03:22:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 03:22:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 03:22:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-23 03:22:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-23 03:22:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:22:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:22:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 03:22:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:22:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:22:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 03:22:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 03:22:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-23 03:22:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-23 03:22:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:22:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-23 03:22:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-23 03:22:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 03:22:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-23 03:22:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-23 03:22:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:22:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-23 03:22:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-23 03:22:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:22:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-23 03:22:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-23 03:22:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 03:22:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 03:22:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-23 03:22:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-23 03:22:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 03:22:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2022-11-23 03:22:16,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2022-11-23 03:22:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-23 03:22:16,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-23 03:22:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-23 03:22:16,374 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-23 03:22:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2022-11-23 03:22:16,380 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2022-11-23 03:22:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:22:16,870 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:22:16,872 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:22:18,046 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:22:18,071 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:22:18,071 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:22:18,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:18 BoogieIcfgContainer [2022-11-23 03:22:18,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:22:18,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:22:18,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:22:18,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:22:18,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:22:12" (1/3) ... [2022-11-23 03:22:18,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724d8a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:18, skipping insertion in model container [2022-11-23 03:22:18,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:15" (2/3) ... [2022-11-23 03:22:18,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724d8a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:18, skipping insertion in model container [2022-11-23 03:22:18,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:18" (3/3) ... [2022-11-23 03:22:18,090 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2022-11-23 03:22:18,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:22:18,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:22:18,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:22:18,233 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@426d096e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:22:18,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:22:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-23 03:22:18,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 03:22:18,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:18,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:18,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:18,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1925006632, now seen corresponding path program 1 times [2022-11-23 03:22:18,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:18,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783751880] [2022-11-23 03:22:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 03:22:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 03:22:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:22:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:19,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783751880] [2022-11-23 03:22:19,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783751880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:19,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:19,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:22:19,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317942946] [2022-11-23 03:22:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:19,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:22:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:19,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:22:19,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:22:19,160 INFO L87 Difference]: Start difference. First operand has 136 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:22:19,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:19,213 INFO L93 Difference]: Finished difference Result 268 states and 349 transitions. [2022-11-23 03:22:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:22:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-23 03:22:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:19,228 INFO L225 Difference]: With dead ends: 268 [2022-11-23 03:22:19,229 INFO L226 Difference]: Without dead ends: 131 [2022-11-23 03:22:19,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:22:19,238 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:19,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-23 03:22:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-11-23 03:22:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 83 states have internal predecessors, (91), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-23 03:22:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2022-11-23 03:22:19,331 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 25 [2022-11-23 03:22:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:19,331 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2022-11-23 03:22:19,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:22:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2022-11-23 03:22:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 03:22:19,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:19,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:19,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:22:19,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:19,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash -69138074, now seen corresponding path program 1 times [2022-11-23 03:22:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:19,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277974465] [2022-11-23 03:22:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 03:22:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 03:22:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:22:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:19,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277974465] [2022-11-23 03:22:19,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277974465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:19,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:19,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:22:19,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878137799] [2022-11-23 03:22:19,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:19,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:22:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:19,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:22:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:22:19,915 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:22:20,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:20,007 INFO L93 Difference]: Finished difference Result 185 states and 229 transitions. [2022-11-23 03:22:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:22:20,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-23 03:22:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:20,020 INFO L225 Difference]: With dead ends: 185 [2022-11-23 03:22:20,020 INFO L226 Difference]: Without dead ends: 147 [2022-11-23 03:22:20,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:22:20,026 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 5 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:20,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 321 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-23 03:22:20,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-11-23 03:22:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 89 states have internal predecessors, (98), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-23 03:22:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 177 transitions. [2022-11-23 03:22:20,072 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 177 transitions. Word has length 25 [2022-11-23 03:22:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:20,074 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 177 transitions. [2022-11-23 03:22:20,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:22:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 177 transitions. [2022-11-23 03:22:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 03:22:20,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:20,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:20,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:22:20,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:20,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1141503883, now seen corresponding path program 1 times [2022-11-23 03:22:20,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:20,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29399713] [2022-11-23 03:22:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:20,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 03:22:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 03:22:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:22:20,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:20,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29399713] [2022-11-23 03:22:20,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29399713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:20,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:20,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:22:20,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728757418] [2022-11-23 03:22:20,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:20,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:22:20,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:20,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:22:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:22:20,536 INFO L87 Difference]: Start difference. First operand 142 states and 177 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:22:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:20,594 INFO L93 Difference]: Finished difference Result 190 states and 234 transitions. [2022-11-23 03:22:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:22:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-23 03:22:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:20,598 INFO L225 Difference]: With dead ends: 190 [2022-11-23 03:22:20,598 INFO L226 Difference]: Without dead ends: 151 [2022-11-23 03:22:20,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:22:20,600 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:20,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 320 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-23 03:22:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-23 03:22:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 93 states have internal predecessors, (102), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-23 03:22:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 188 transitions. [2022-11-23 03:22:20,623 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 188 transitions. Word has length 26 [2022-11-23 03:22:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:20,623 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 188 transitions. [2022-11-23 03:22:20,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:22:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 188 transitions. [2022-11-23 03:22:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 03:22:20,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:20,632 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:20,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:22:20,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash -478144861, now seen corresponding path program 1 times [2022-11-23 03:22:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:20,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784485370] [2022-11-23 03:22:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:20,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:22:20,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731349278] [2022-11-23 03:22:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:20,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:20,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:20,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:20,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:22:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:21,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:22:21,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-23 03:22:21,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:21,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:21,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784485370] [2022-11-23 03:22:21,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:22:21,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731349278] [2022-11-23 03:22:21,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731349278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:21,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:22:21,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:22:21,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126476551] [2022-11-23 03:22:21,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:21,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:22:21,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:22:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:22:21,627 INFO L87 Difference]: Start difference. First operand 151 states and 188 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 03:22:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:21,714 INFO L93 Difference]: Finished difference Result 301 states and 381 transitions. [2022-11-23 03:22:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:22:21,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 126 [2022-11-23 03:22:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:21,720 INFO L225 Difference]: With dead ends: 301 [2022-11-23 03:22:21,720 INFO L226 Difference]: Without dead ends: 156 [2022-11-23 03:22:21,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:22:21,724 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:21,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 623 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-23 03:22:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-11-23 03:22:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 94 states have (on average 1.127659574468085) internal successors, (106), 97 states have internal predecessors, (106), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-23 03:22:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 193 transitions. [2022-11-23 03:22:21,751 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 193 transitions. Word has length 126 [2022-11-23 03:22:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:21,753 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 193 transitions. [2022-11-23 03:22:21,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 03:22:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 193 transitions. [2022-11-23 03:22:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 03:22:21,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:21,763 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:21,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:22:21,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:21,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1837351329, now seen corresponding path program 1 times [2022-11-23 03:22:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:21,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208777967] [2022-11-23 03:22:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:22:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 03:22:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 03:22:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-23 03:22:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 03:22:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 03:22:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:22:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 03:22:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:22:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:22:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 03:22:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-23 03:22:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-23 03:22:24,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:24,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208777967] [2022-11-23 03:22:24,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208777967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:22:24,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187536669] [2022-11-23 03:22:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:24,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:24,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:24,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:24,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:22:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:25,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 03:22:25,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:25,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 03:22:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:22:26,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:26,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187536669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:26,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:22:26,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 21 [2022-11-23 03:22:26,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952713096] [2022-11-23 03:22:26,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:26,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:22:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:22:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-11-23 03:22:26,012 INFO L87 Difference]: Start difference. First operand 156 states and 193 transitions. Second operand has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-23 03:22:28,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:22:30,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:32,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:35,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:37,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:39,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:22:41,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:43,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:45,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:47,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:49,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:22:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:49,630 INFO L93 Difference]: Finished difference Result 397 states and 486 transitions. [2022-11-23 03:22:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 03:22:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 138 [2022-11-23 03:22:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:49,635 INFO L225 Difference]: With dead ends: 397 [2022-11-23 03:22:49,635 INFO L226 Difference]: Without dead ends: 254 [2022-11-23 03:22:49,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-11-23 03:22:49,637 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 140 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 30 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:49,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1187 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 416 Invalid, 11 Unknown, 0 Unchecked, 23.2s Time] [2022-11-23 03:22:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-23 03:22:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2022-11-23 03:22:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 157 states have internal predecessors, (174), 64 states have call successors, (64), 30 states have call predecessors, (64), 30 states have return successors, (68), 61 states have call predecessors, (68), 62 states have call successors, (68) [2022-11-23 03:22:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 306 transitions. [2022-11-23 03:22:49,674 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 306 transitions. Word has length 138 [2022-11-23 03:22:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:49,675 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 306 transitions. [2022-11-23 03:22:49,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-23 03:22:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 306 transitions. [2022-11-23 03:22:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 03:22:49,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:49,678 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:49,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:49,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:49,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1344725155, now seen corresponding path program 1 times [2022-11-23 03:22:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:49,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479194667] [2022-11-23 03:22:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:22:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 03:22:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 03:22:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-23 03:22:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 03:22:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 03:22:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:22:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 03:22:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:22:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:22:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 03:22:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-23 03:22:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-23 03:22:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:50,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479194667] [2022-11-23 03:22:50,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479194667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:22:50,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576475416] [2022-11-23 03:22:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:50,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:50,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:22:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:51,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:22:51,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:22:51,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:22:51,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576475416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:22:51,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:22:51,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-23 03:22:51,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378800404] [2022-11-23 03:22:51,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:22:51,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:22:51,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:22:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:22:51,501 INFO L87 Difference]: Start difference. First operand 248 states and 306 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 03:22:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:51,698 INFO L93 Difference]: Finished difference Result 475 states and 587 transitions. [2022-11-23 03:22:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:22:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 138 [2022-11-23 03:22:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:51,701 INFO L225 Difference]: With dead ends: 475 [2022-11-23 03:22:51,701 INFO L226 Difference]: Without dead ends: 253 [2022-11-23 03:22:51,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:22:51,703 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 168 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:51,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 515 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:22:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-23 03:22:51,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-11-23 03:22:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 156 states have (on average 1.1282051282051282) internal successors, (176), 161 states have internal predecessors, (176), 65 states have call successors, (65), 30 states have call predecessors, (65), 31 states have return successors, (73), 62 states have call predecessors, (73), 63 states have call successors, (73) [2022-11-23 03:22:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 314 transitions. [2022-11-23 03:22:51,759 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 314 transitions. Word has length 138 [2022-11-23 03:22:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:22:51,759 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 314 transitions. [2022-11-23 03:22:51,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 03:22:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 314 transitions. [2022-11-23 03:22:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-23 03:22:51,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:22:51,762 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:22:51,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:22:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 03:22:51,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:22:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:22:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1514885783, now seen corresponding path program 1 times [2022-11-23 03:22:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:22:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814799657] [2022-11-23 03:22:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:22:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:22:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 03:22:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 03:22:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-23 03:22:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 03:22:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 03:22:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:22:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 03:22:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:22:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 03:22:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:22:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:22:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:22:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 03:22:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 03:22:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-23 03:22:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:22:53,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814799657] [2022-11-23 03:22:53,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814799657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:22:53,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110493345] [2022-11-23 03:22:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:22:53,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:22:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:22:53,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:22:53,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:22:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:22:53,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2502 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:22:53,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:22:56,046 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-11-23 03:23:04,124 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:23:12,213 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:23:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 03:23:12,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:23:12,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110493345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:12,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:23:12,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-23 03:23:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134681748] [2022-11-23 03:23:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:23:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:23:12,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2022-11-23 03:23:12,255 INFO L87 Difference]: Start difference. First operand 253 states and 314 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 03:23:14,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:23:20,444 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:23:22,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:23:22,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:23:22,825 INFO L93 Difference]: Finished difference Result 498 states and 619 transitions. [2022-11-23 03:23:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:23:22,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 144 [2022-11-23 03:23:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:23:22,828 INFO L225 Difference]: With dead ends: 498 [2022-11-23 03:23:22,828 INFO L226 Difference]: Without dead ends: 260 [2022-11-23 03:23:22,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=64, Invalid=279, Unknown=3, NotChecked=34, Total=380 [2022-11-23 03:23:22,830 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 12 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:23:22,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 855 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 1 Unknown, 168 Unchecked, 4.3s Time] [2022-11-23 03:23:22,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-23 03:23:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-11-23 03:23:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 160 states have (on average 1.11875) internal successors, (179), 165 states have internal predecessors, (179), 66 states have call successors, (66), 31 states have call predecessors, (66), 32 states have return successors, (74), 63 states have call predecessors, (74), 64 states have call successors, (74) [2022-11-23 03:23:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 319 transitions. [2022-11-23 03:23:22,867 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 319 transitions. Word has length 144 [2022-11-23 03:23:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:23:22,870 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 319 transitions. [2022-11-23 03:23:22,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 03:23:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 319 transitions. [2022-11-23 03:23:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-23 03:23:22,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:23:22,876 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:23:22,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:23:23,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:23:23,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:23:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1222683155, now seen corresponding path program 1 times [2022-11-23 03:23:23,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:23,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502130261] [2022-11-23 03:23:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:23,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:23:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:32,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:32,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 03:23:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 03:23:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-23 03:23:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 03:23:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:33,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 03:23:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:23:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 03:23:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:23:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 03:23:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 03:23:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:37,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:23:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-23 03:23:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-23 03:23:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-23 03:23:38,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:38,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502130261] [2022-11-23 03:23:38,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502130261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:38,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:38,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-23 03:23:38,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345253509] [2022-11-23 03:23:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:38,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 03:23:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 03:23:38,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-11-23 03:23:38,392 INFO L87 Difference]: Start difference. First operand 259 states and 319 transitions. Second operand has 27 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 15 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-23 03:23:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:23:45,578 INFO L93 Difference]: Finished difference Result 463 states and 595 transitions. [2022-11-23 03:23:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-23 03:23:45,579 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 15 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) Word has length 149 [2022-11-23 03:23:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:23:45,582 INFO L225 Difference]: With dead ends: 463 [2022-11-23 03:23:45,582 INFO L226 Difference]: Without dead ends: 337 [2022-11-23 03:23:45,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=253, Invalid=2197, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 03:23:45,585 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 251 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 2992 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:23:45,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1098 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2992 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 03:23:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-23 03:23:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 281. [2022-11-23 03:23:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 175 states have (on average 1.12) internal successors, (196), 183 states have internal predecessors, (196), 69 states have call successors, (69), 31 states have call predecessors, (69), 36 states have return successors, (87), 67 states have call predecessors, (87), 67 states have call successors, (87) [2022-11-23 03:23:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 352 transitions. [2022-11-23 03:23:45,634 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 352 transitions. Word has length 149 [2022-11-23 03:23:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:23:45,635 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 352 transitions. [2022-11-23 03:23:45,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 15 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-23 03:23:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 352 transitions. [2022-11-23 03:23:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-23 03:23:45,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:23:45,638 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:23:45,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:23:45,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:23:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash 829656145, now seen corresponding path program 1 times [2022-11-23 03:23:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:45,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482536468] [2022-11-23 03:23:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:45,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:23:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 03:23:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 03:23:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-23 03:23:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 03:23:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 03:23:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:23:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 03:23:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:23:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 03:23:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 03:23:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:23:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-23 03:23:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-23 03:23:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-23 03:23:46,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:46,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482536468] [2022-11-23 03:23:46,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482536468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:46,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:46,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 03:23:46,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969736578] [2022-11-23 03:23:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:46,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:23:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:46,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:23:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:23:46,579 INFO L87 Difference]: Start difference. First operand 281 states and 352 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 03:23:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:23:47,194 INFO L93 Difference]: Finished difference Result 446 states and 560 transitions. [2022-11-23 03:23:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:23:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 149 [2022-11-23 03:23:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:23:47,198 INFO L225 Difference]: With dead ends: 446 [2022-11-23 03:23:47,198 INFO L226 Difference]: Without dead ends: 289 [2022-11-23 03:23:47,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:23:47,200 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 125 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:23:47,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 401 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:23:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-23 03:23:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 268. [2022-11-23 03:23:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 166 states have (on average 1.108433734939759) internal successors, (184), 173 states have internal predecessors, (184), 67 states have call successors, (67), 30 states have call predecessors, (67), 34 states have return successors, (80), 65 states have call predecessors, (80), 65 states have call successors, (80) [2022-11-23 03:23:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 331 transitions. [2022-11-23 03:23:47,246 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 331 transitions. Word has length 149 [2022-11-23 03:23:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:23:47,248 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 331 transitions. [2022-11-23 03:23:47,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 03:23:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 331 transitions. [2022-11-23 03:23:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 03:23:47,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:23:47,251 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 03:23:47,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:23:47,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:23:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1807064967, now seen corresponding path program 1 times [2022-11-23 03:23:47,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:47,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857796903] [2022-11-23 03:23:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:47,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:23:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 03:23:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 03:23:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-23 03:23:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 03:23:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 03:23:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:23:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 03:23:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:23:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 03:23:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 03:23:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 03:23:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:23:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:23:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-23 03:23:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-23 03:23:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 03:23:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:23:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-23 03:23:48,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:48,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857796903] [2022-11-23 03:23:48,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857796903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:23:48,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74932949] [2022-11-23 03:23:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:48,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:23:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:23:48,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:23:48,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:23:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:49,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-23 03:23:49,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:23:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 03:23:49,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:23:49,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74932949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:49,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:23:49,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2022-11-23 03:23:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486490308] [2022-11-23 03:23:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:49,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:23:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:23:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:23:49,767 INFO L87 Difference]: Start difference. First operand 268 states and 331 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-23 03:23:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:23:49,976 INFO L93 Difference]: Finished difference Result 540 states and 674 transitions. [2022-11-23 03:23:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:23:49,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 160 [2022-11-23 03:23:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:23:49,980 INFO L225 Difference]: With dead ends: 540 [2022-11-23 03:23:49,980 INFO L226 Difference]: Without dead ends: 274 [2022-11-23 03:23:49,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:23:49,983 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 20 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:23:49,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 900 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:23:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-23 03:23:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-11-23 03:23:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 169 states have (on average 1.106508875739645) internal successors, (187), 179 states have internal predecessors, (187), 67 states have call successors, (67), 30 states have call predecessors, (67), 37 states have return successors, (84), 65 states have call predecessors, (84), 65 states have call successors, (84) [2022-11-23 03:23:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 338 transitions. [2022-11-23 03:23:50,023 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 338 transitions. Word has length 160 [2022-11-23 03:23:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:23:50,024 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 338 transitions. [2022-11-23 03:23:50,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-23 03:23:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 338 transitions. [2022-11-23 03:23:50,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 03:23:50,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:23:50,028 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:23:50,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:23:50,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 03:23:50,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:23:50,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:50,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1212041539, now seen corresponding path program 1 times [2022-11-23 03:23:50,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:50,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514218272] [2022-11-23 03:23:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:50,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:50,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:23:50,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849248489] [2022-11-23 03:23:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:50,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:23:50,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:23:50,326 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:23:50,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:23:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:51,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 03:23:51,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:23:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 03:23:51,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:23:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-23 03:23:51,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:51,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514218272] [2022-11-23 03:23:51,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:23:51,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849248489] [2022-11-23 03:23:51,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849248489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:23:51,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:23:51,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2022-11-23 03:23:51,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650617630] [2022-11-23 03:23:51,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:23:51,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 03:23:51,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:51,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 03:23:51,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:23:51,609 INFO L87 Difference]: Start difference. First operand 274 states and 338 transitions. Second operand has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-23 03:23:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:23:51,849 INFO L93 Difference]: Finished difference Result 525 states and 646 transitions. [2022-11-23 03:23:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:23:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) Word has length 166 [2022-11-23 03:23:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:23:51,852 INFO L225 Difference]: With dead ends: 525 [2022-11-23 03:23:51,852 INFO L226 Difference]: Without dead ends: 272 [2022-11-23 03:23:51,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:23:51,854 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 6 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:23:51,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1551 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:23:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-23 03:23:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 268. [2022-11-23 03:23:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 166 states have (on average 1.0783132530120483) internal successors, (179), 173 states have internal predecessors, (179), 67 states have call successors, (67), 30 states have call predecessors, (67), 34 states have return successors, (80), 65 states have call predecessors, (80), 65 states have call successors, (80) [2022-11-23 03:23:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 326 transitions. [2022-11-23 03:23:51,887 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 326 transitions. Word has length 166 [2022-11-23 03:23:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:23:51,888 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 326 transitions. [2022-11-23 03:23:51,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-23 03:23:51,889 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 326 transitions. [2022-11-23 03:23:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-23 03:23:51,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:23:51,891 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:23:51,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:23:52,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:23:52,103 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:23:52,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash -382620781, now seen corresponding path program 1 times [2022-11-23 03:23:52,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:52,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505984680] [2022-11-23 03:23:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:52,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:23:52,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197899359] [2022-11-23 03:23:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:52,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:23:52,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:23:52,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:23:52,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac5c501-35a7-4855-be2d-d14c5fb51130/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:23:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:52,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 206 conjunts are in the unsatisfiable core [2022-11-23 03:23:52,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:23:53,090 INFO L321 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2022-11-23 03:23:53,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 55 treesize of output 54 [2022-11-23 03:23:53,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-23 03:23:53,871 INFO L321 Elim1Store]: treesize reduction 127, result has 19.1 percent of original size [2022-11-23 03:23:53,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 665 treesize of output 657 [2022-11-23 03:23:54,230 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_bounded_malloc_#res.base| 0)) (< |c_bounded_malloc_#res.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1832 Int)) (= |c_#valid| (store |c_old(#valid)| |c_bounded_malloc_#res.base| v_ArrVal_1832)))) is different from true [2022-11-23 03:23:54,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 03:23:54,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:23:54,920 INFO L321 Elim1Store]: treesize reduction 559, result has 20.0 percent of original size [2022-11-23 03:23:54,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 244 treesize of output 344 [2022-11-23 03:23:59,783 INFO L321 Elim1Store]: treesize reduction 700, result has 12.4 percent of original size [2022-11-23 03:23:59,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 42 case distinctions, treesize of input 9632805 treesize of output 9622602