./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ --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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- 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-dbf71c6-m [2022-10-17 11:06:19,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:06:19,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:06:20,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:06:20,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:06:20,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:06:20,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:06:20,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:06:20,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:06:20,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:06:20,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:06:20,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:06:20,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:06:20,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:06:20,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:06:20,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:06:20,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:06:20,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:06:20,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:06:20,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:06:20,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:06:20,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:06:20,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:06:20,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:06:20,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:06:20,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:06:20,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:06:20,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:06:20,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:06:20,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:06:20,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:06:20,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:06:20,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:06:20,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:06:20,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:06:20,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:06:20,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:06:20,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:06:20,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:06:20,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:06:20,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:06:20,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 11:06:20,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:06:20,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:06:20,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:06:20,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:06:20,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:06:20,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:06:20,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:06:20,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:06:20,142 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:06:20,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:06:20,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:06:20,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:06:20,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:06:20,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:06:20,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:06:20,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:06:20,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:06:20,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:06:20,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:06:20,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:06:20,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:06:20,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:20,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:06:20,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:06:20,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:06:20,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:06:20,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:06:20,148 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:06:20,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:06:20,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:06:20,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2022-10-17 11:06:20,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:06:20,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:06:20,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:06:20,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:06:20,458 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:06:20,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2022-10-17 11:06:20,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/data/a0c36cdd9/9beb6ff6a2d94163afc11cd5377fea0a/FLAG87c55c515 [2022-10-17 11:06:21,312 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:06:21,313 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2022-10-17 11:06:21,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/data/a0c36cdd9/9beb6ff6a2d94163afc11cd5377fea0a/FLAG87c55c515 [2022-10-17 11:06:21,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/data/a0c36cdd9/9beb6ff6a2d94163afc11cd5377fea0a [2022-10-17 11:06:21,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:06:21,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:06:21,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:21,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:06:21,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:06:21,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:21" (1/1) ... [2022-10-17 11:06:21,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379f65a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:21, skipping insertion in model container [2022-10-17 11:06:21,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:06:21" (1/1) ... [2022-10-17 11:06:21,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:06:21,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:06:22,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2022-10-17 11:06:22,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2022-10-17 11:06:23,172 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 11:06:23,265 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,266 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,266 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,267 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,273 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,286 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,295 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,297 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,300 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,647 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 11:06:23,648 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 11:06:23,649 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 11:06:23,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 11:06:23,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 11:06:23,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 11:06:23,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 11:06:23,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 11:06:23,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 11:06:23,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 11:06:23,804 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:23,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:23,989 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:06:24,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2022-10-17 11:06:24,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2022-10-17 11:06:24,084 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 11:06:24,102 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,109 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,111 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,111 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,112 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,121 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,122 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,123 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,124 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 11:06:24,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 11:06:24,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 11:06:24,181 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 11:06:24,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 11:06:24,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 11:06:24,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 11:06:24,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 11:06:24,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 11:06:24,187 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 11:06:24,242 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,243 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:06:24,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:06:24,498 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:06:24,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24 WrapperNode [2022-10-17 11:06:24,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:06:24,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:24,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:06:24,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:06:24,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,679 INFO L138 Inliner]: procedures = 689, calls = 1514, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 736 [2022-10-17 11:06:24,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:06:24,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:06:24,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:06:24,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:06:24,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:06:24,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:06:24,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:06:24,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:06:24,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (1/1) ... [2022-10-17 11:06:24,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:06:24,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:24,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:06:24,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:06:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-10-17 11:06:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-10-17 11:06:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:06:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-10-17 11:06:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-10-17 11:06:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 11:06:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 11:06:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-10-17 11:06:24,908 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-10-17 11:06:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:06:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 11:06:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 11:06:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 11:06:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 11:06:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:06:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:06:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 11:06:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:06:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:06:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 11:06:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 11:06:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 11:06:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 11:06:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-10-17 11:06:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-10-17 11:06:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-10-17 11:06:24,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-10-17 11:06:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 11:06:24,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 11:06:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:06:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 11:06:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 11:06:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-10-17 11:06:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-10-17 11:06:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 11:06:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 11:06:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:06:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-10-17 11:06:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-10-17 11:06:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-10-17 11:06:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-10-17 11:06:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:06:25,281 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:06:25,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:06:26,439 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:06:26,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:06:26,448 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 11:06:26,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:26 BoogieIcfgContainer [2022-10-17 11:06:26,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:06:26,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:06:26,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:06:26,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:06:26,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:06:21" (1/3) ... [2022-10-17 11:06:26,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb31c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:26, skipping insertion in model container [2022-10-17 11:06:26,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:06:24" (2/3) ... [2022-10-17 11:06:26,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb31c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:06:26, skipping insertion in model container [2022-10-17 11:06:26,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:06:26" (3/3) ... [2022-10-17 11:06:26,462 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2022-10-17 11:06:26,485 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:06:26,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:06:26,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:06:26,582 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;@283e895a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:06:26,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:06:26,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-17 11:06:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-17 11:06:26,605 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:26,606 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-10-17 11:06:26,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash -657799819, now seen corresponding path program 1 times [2022-10-17 11:06:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:26,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978105896] [2022-10-17 11:06:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:27,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:27,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978105896] [2022-10-17 11:06:27,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 11:06:27,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333792533] [2022-10-17 11:06:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:27,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:27,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:27,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:27,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:06:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:27,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 11:06:27,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-10-17 11:06:27,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:27,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333792533] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:27,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:27,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:06:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805934532] [2022-10-17 11:06:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:27,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:06:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:06:28,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:06:28,021 INFO L87 Difference]: Start difference. First operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-10-17 11:06:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:28,077 INFO L93 Difference]: Finished difference Result 389 states and 571 transitions. [2022-10-17 11:06:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:06:28,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 99 [2022-10-17 11:06:28,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:28,091 INFO L225 Difference]: With dead ends: 389 [2022-10-17 11:06:28,091 INFO L226 Difference]: Without dead ends: 190 [2022-10-17 11:06:28,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:06:28,100 INFO L413 NwaCegarLoop]: 261 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, 261 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 [2022-10-17 11:06:28,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-10-17 11:06:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-10-17 11:06:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-17 11:06:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2022-10-17 11:06:28,162 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 99 [2022-10-17 11:06:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:28,163 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2022-10-17 11:06:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-10-17 11:06:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2022-10-17 11:06:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-10-17 11:06:28,170 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:28,171 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-10-17 11:06:28,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:28,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 11:06:28,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1585195372, now seen corresponding path program 1 times [2022-10-17 11:06:28,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:28,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371058528] [2022-10-17 11:06:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:28,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:28,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:28,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084849239] [2022-10-17 11:06:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:28,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:28,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:28,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:28,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:06:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:29,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 11:06:29,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-10-17 11:06:29,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:06:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-10-17 11:06:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:29,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371058528] [2022-10-17 11:06:29,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:29,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084849239] [2022-10-17 11:06:29,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084849239] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 11:06:29,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:06:29,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2022-10-17 11:06:29,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297462951] [2022-10-17 11:06:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:29,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:06:29,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:06:29,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:06:29,589 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-10-17 11:06:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:29,708 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2022-10-17 11:06:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:06:29,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 133 [2022-10-17 11:06:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:29,713 INFO L225 Difference]: With dead ends: 198 [2022-10-17 11:06:29,714 INFO L226 Difference]: Without dead ends: 196 [2022-10-17 11:06:29,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:06:29,715 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 6 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:29,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 983 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-10-17 11:06:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-10-17 11:06:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 127 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2022-10-17 11:06:29,761 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 133 [2022-10-17 11:06:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:29,762 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2022-10-17 11:06:29,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-10-17 11:06:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2022-10-17 11:06:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-10-17 11:06:29,765 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:29,765 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-10-17 11:06:29,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:29,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-17 11:06:29,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:29,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042414, now seen corresponding path program 1 times [2022-10-17 11:06:29,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:29,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953244296] [2022-10-17 11:06:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:29,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:30,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:30,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042877325] [2022-10-17 11:06:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:30,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:30,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:30,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:30,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:06:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:30,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 11:06:30,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 11:06:30,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:30,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:30,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953244296] [2022-10-17 11:06:30,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042877325] [2022-10-17 11:06:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042877325] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:30,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:30,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:06:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355889058] [2022-10-17 11:06:30,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:30,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:06:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:06:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:06:30,631 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 11:06:30,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:30,729 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2022-10-17 11:06:30,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:06:30,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 133 [2022-10-17 11:06:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:30,734 INFO L225 Difference]: With dead ends: 379 [2022-10-17 11:06:30,734 INFO L226 Difference]: Without dead ends: 195 [2022-10-17 11:06:30,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:06:30,736 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 13 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:30,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1207 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:06:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-10-17 11:06:30,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-10-17 11:06:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.217741935483871) internal successors, (151), 127 states have internal predecessors, (151), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2022-10-17 11:06:30,756 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 133 [2022-10-17 11:06:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:30,757 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2022-10-17 11:06:30,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 11:06:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2022-10-17 11:06:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-17 11:06:30,759 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:30,759 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-10-17 11:06:30,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:30,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:30,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1650813770, now seen corresponding path program 1 times [2022-10-17 11:06:30,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:30,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976063052] [2022-10-17 11:06:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:30,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:31,073 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:31,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916925020] [2022-10-17 11:06:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:31,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:31,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:31,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:31,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 11:06:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:31,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 11:06:31,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-17 11:06:31,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:06:31,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:31,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976063052] [2022-10-17 11:06:31,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916925020] [2022-10-17 11:06:31,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916925020] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:06:31,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:06:31,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:06:31,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331931880] [2022-10-17 11:06:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:06:31,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:06:31,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:06:31,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:06:31,679 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-10-17 11:06:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:31,713 INFO L93 Difference]: Finished difference Result 375 states and 493 transitions. [2022-10-17 11:06:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:06:31,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 135 [2022-10-17 11:06:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:31,717 INFO L225 Difference]: With dead ends: 375 [2022-10-17 11:06:31,717 INFO L226 Difference]: Without dead ends: 197 [2022-10-17 11:06:31,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:06:31,720 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:31,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 496 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:06:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-10-17 11:06:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2022-10-17 11:06:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2022-10-17 11:06:31,751 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 135 [2022-10-17 11:06:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:31,752 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2022-10-17 11:06:31,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-10-17 11:06:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2022-10-17 11:06:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-17 11:06:31,755 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:31,755 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-10-17 11:06:31,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:31,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:31,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash 574277750, now seen corresponding path program 1 times [2022-10-17 11:06:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:31,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936565497] [2022-10-17 11:06:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:32,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:32,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107605381] [2022-10-17 11:06:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:32,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:32,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:32,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:32,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 11:06:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:06:32,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-17 11:06:32,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-10-17 11:06:32,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:06:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-10-17 11:06:33,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:33,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936565497] [2022-10-17 11:06:33,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:33,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107605381] [2022-10-17 11:06:33,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107605381] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:06:33,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:06:33,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-10-17 11:06:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620136853] [2022-10-17 11:06:33,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 11:06:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 11:06:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 11:06:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:06:33,141 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-10-17 11:06:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:33,313 INFO L93 Difference]: Finished difference Result 384 states and 500 transitions. [2022-10-17 11:06:33,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:06:33,314 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 139 [2022-10-17 11:06:33,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:33,316 INFO L225 Difference]: With dead ends: 384 [2022-10-17 11:06:33,317 INFO L226 Difference]: Without dead ends: 199 [2022-10-17 11:06:33,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-10-17 11:06:33,318 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 29 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:33,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1926 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:06:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-10-17 11:06:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2022-10-17 11:06:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2022-10-17 11:06:33,335 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 139 [2022-10-17 11:06:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2022-10-17 11:06:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-10-17 11:06:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2022-10-17 11:06:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-17 11:06:33,338 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:33,339 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 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] [2022-10-17 11:06:33,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:33,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:33,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:33,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1733366986, now seen corresponding path program 2 times [2022-10-17 11:06:33,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:33,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890411395] [2022-10-17 11:06:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:33,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:33,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:33,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116337410] [2022-10-17 11:06:33,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 11:06:33,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:33,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:33,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:33,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 11:06:34,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 11:06:34,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:06:34,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-17 11:06:34,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-10-17 11:06:35,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:06:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-10-17 11:06:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:35,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890411395] [2022-10-17 11:06:35,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:35,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116337410] [2022-10-17 11:06:35,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116337410] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:06:35,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:06:35,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-10-17 11:06:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201213255] [2022-10-17 11:06:35,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 11:06:35,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 11:06:35,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:35,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 11:06:35,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-10-17 11:06:35,652 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 18 states, 16 states have (on average 5.0) internal successors, (80), 18 states have internal predecessors, (80), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2022-10-17 11:06:35,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:35,966 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2022-10-17 11:06:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 11:06:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.0) internal successors, (80), 18 states have internal predecessors, (80), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) Word has length 143 [2022-10-17 11:06:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:35,970 INFO L225 Difference]: With dead ends: 388 [2022-10-17 11:06:35,970 INFO L226 Difference]: Without dead ends: 201 [2022-10-17 11:06:35,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-10-17 11:06:35,972 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:35,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2398 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:06:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-10-17 11:06:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2022-10-17 11:06:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 132 states have internal predecessors, (156), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2022-10-17 11:06:35,987 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 143 [2022-10-17 11:06:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:35,988 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2022-10-17 11:06:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.0) internal successors, (80), 18 states have internal predecessors, (80), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2022-10-17 11:06:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2022-10-17 11:06:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-10-17 11:06:35,991 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:35,991 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 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] [2022-10-17 11:06:36,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:36,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:36,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:36,209 INFO L85 PathProgramCache]: Analyzing trace with hash 833600758, now seen corresponding path program 3 times [2022-10-17 11:06:36,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:36,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203657823] [2022-10-17 11:06:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:36,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:36,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:36,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739499336] [2022-10-17 11:06:36,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 11:06:36,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:36,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:36,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:36,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 11:06:37,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-17 11:06:37,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:06:37,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-17 11:06:37,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-10-17 11:06:38,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:06:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-10-17 11:06:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:38,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203657823] [2022-10-17 11:06:38,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739499336] [2022-10-17 11:06:38,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739499336] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:06:38,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:06:38,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-10-17 11:06:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106833425] [2022-10-17 11:06:38,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 11:06:38,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 11:06:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 11:06:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-10-17 11:06:38,747 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-10-17 11:06:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:39,264 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2022-10-17 11:06:39,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:06:39,265 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 147 [2022-10-17 11:06:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:39,268 INFO L225 Difference]: With dead ends: 392 [2022-10-17 11:06:39,268 INFO L226 Difference]: Without dead ends: 203 [2022-10-17 11:06:39,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-10-17 11:06:39,270 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 37 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:39,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2879 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:06:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-10-17 11:06:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2022-10-17 11:06:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 134 states have internal predecessors, (158), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2022-10-17 11:06:39,285 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 147 [2022-10-17 11:06:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:39,286 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2022-10-17 11:06:39,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-10-17 11:06:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2022-10-17 11:06:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-10-17 11:06:39,289 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:39,289 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 8, 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] [2022-10-17 11:06:39,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:39,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:39,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:39,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:39,502 INFO L85 PathProgramCache]: Analyzing trace with hash 579206582, now seen corresponding path program 4 times [2022-10-17 11:06:39,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:39,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075873201] [2022-10-17 11:06:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:39,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:39,597 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:39,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170254499] [2022-10-17 11:06:39,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 11:06:39,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:39,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:39,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:39,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 11:06:40,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 11:06:40,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:06:40,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-17 11:06:40,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-10-17 11:06:40,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:06:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-10-17 11:06:41,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:41,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075873201] [2022-10-17 11:06:41,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:41,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170254499] [2022-10-17 11:06:41,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170254499] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:06:41,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:06:41,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2022-10-17 11:06:41,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865703139] [2022-10-17 11:06:41,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 11:06:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 11:06:41,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 11:06:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-10-17 11:06:41,176 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 21 states, 19 states have (on average 4.684210526315789) internal successors, (89), 21 states have internal predecessors, (89), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2022-10-17 11:06:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:41,605 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2022-10-17 11:06:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:06:41,606 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.684210526315789) internal successors, (89), 21 states have internal predecessors, (89), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) Word has length 151 [2022-10-17 11:06:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:41,608 INFO L225 Difference]: With dead ends: 396 [2022-10-17 11:06:41,608 INFO L226 Difference]: Without dead ends: 205 [2022-10-17 11:06:41,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2022-10-17 11:06:41,610 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 43 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:41,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3356 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:06:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-10-17 11:06:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2022-10-17 11:06:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2022-10-17 11:06:41,633 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 151 [2022-10-17 11:06:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:41,634 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2022-10-17 11:06:41,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.684210526315789) internal successors, (89), 21 states have internal predecessors, (89), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2022-10-17 11:06:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2022-10-17 11:06:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-10-17 11:06:41,638 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:41,638 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 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] [2022-10-17 11:06:41,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:41,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:41,852 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash -519410314, now seen corresponding path program 5 times [2022-10-17 11:06:41,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:41,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293222977] [2022-10-17 11:06:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:41,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:41,976 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:41,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682997564] [2022-10-17 11:06:41,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 11:06:41,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:41,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:41,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:41,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 11:06:42,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-10-17 11:06:42,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:06:42,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-17 11:06:42,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:06:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-10-17 11:06:43,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:06:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-10-17 11:06:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:06:43,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293222977] [2022-10-17 11:06:43,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:06:43,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682997564] [2022-10-17 11:06:43,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682997564] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:06:43,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:06:43,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-10-17 11:06:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002379249] [2022-10-17 11:06:43,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 11:06:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 11:06:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:06:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 11:06:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-10-17 11:06:43,943 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-10-17 11:06:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:06:44,321 INFO L93 Difference]: Finished difference Result 400 states and 516 transitions. [2022-10-17 11:06:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 11:06:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 155 [2022-10-17 11:06:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:06:44,324 INFO L225 Difference]: With dead ends: 400 [2022-10-17 11:06:44,324 INFO L226 Difference]: Without dead ends: 207 [2022-10-17 11:06:44,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-10-17 11:06:44,326 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 45 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:06:44,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3136 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 11:06:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-10-17 11:06:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2022-10-17 11:06:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 11:06:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2022-10-17 11:06:44,340 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 155 [2022-10-17 11:06:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:06:44,341 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2022-10-17 11:06:44,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-10-17 11:06:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2022-10-17 11:06:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-10-17 11:06:44,344 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:06:44,344 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 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] [2022-10-17 11:06:44,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 11:06:44,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:44,551 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:06:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:06:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1604701238, now seen corresponding path program 6 times [2022-10-17 11:06:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:06:44,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379287153] [2022-10-17 11:06:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:06:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:06:44,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:06:44,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021901934] [2022-10-17 11:06:44,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-17 11:06:44,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:06:44,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:06:44,643 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:06:44,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccdd4322-3336-4cbf-80e4-d1d05b7702c3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process