./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN --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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- 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-6b4ec56 [2022-11-20 12:15:35,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:15:35,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:15:35,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:15:35,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:15:35,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:15:35,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:15:35,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:15:35,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:15:35,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:15:35,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:15:35,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:15:35,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:15:35,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:15:35,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:15:35,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:15:35,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:15:35,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:15:35,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:15:35,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:15:35,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:15:35,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:15:35,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:15:35,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:15:35,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:15:35,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:15:35,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:15:35,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:15:35,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:15:35,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:15:35,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:15:35,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:15:35,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:15:35,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:15:35,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:15:35,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:15:35,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:15:35,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:15:35,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:15:35,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:15:35,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:15:35,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:15:35,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:15:35,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:15:35,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:15:35,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:15:35,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:15:35,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:15:35,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:15:35,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:15:35,339 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:15:35,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:15:35,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:15:35,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:15:35,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:15:35,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:15:35,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:15:35,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:15:35,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:15:35,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:15:35,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:15:35,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:15:35,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:15:35,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:35,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:15:35,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:15:35,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:15:35,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:15:35,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:15:35,345 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:15:35,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:15:35,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:15:35,346 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_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2022-11-20 12:15:35,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:15:35,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:15:35,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:15:35,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:15:35,690 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:15:35,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2022-11-20 12:15:38,796 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:15:39,423 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:15:39,423 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2022-11-20 12:15:39,460 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/data/89fcc1a8c/6d9c07d896634e139a7e21a4a069ea7d/FLAGc91482a80 [2022-11-20 12:15:39,481 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/data/89fcc1a8c/6d9c07d896634e139a7e21a4a069ea7d [2022-11-20 12:15:39,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:15:39,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:15:39,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:15:39,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:15:39,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:15:39,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:39" (1/1) ... [2022-11-20 12:15:39,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7d1dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:39, skipping insertion in model container [2022-11-20 12:15:39,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:39" (1/1) ... [2022-11-20 12:15:39,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:15:39,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:15:39,930 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2022-11-20 12:15:39,941 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2022-11-20 12:15:40,937 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:15:41,023 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,024 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,025 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,026 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,027 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,042 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,043 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,045 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,046 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,048 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,050 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,051 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,051 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:15:41,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:15:41,600 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:15:41,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:15:41,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:15:41,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:15:41,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:15:41,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:15:41,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:15:41,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:15:41,837 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,843 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:41,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:15:41,962 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:15:41,989 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2022-11-20 12:15:41,991 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2022-11-20 12:15:42,099 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:15:42,120 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,120 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,121 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,122 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,122 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,129 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,130 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,132 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,133 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,134 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,134 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,134 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:15:42,169 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:15:42,170 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:15:42,171 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:15:42,172 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:15:42,172 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:15:42,173 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:15:42,173 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:15:42,174 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:15:42,174 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:15:42,202 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,207 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:15:42,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:15:42,464 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:15:42,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42 WrapperNode [2022-11-20 12:15:42,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:15:42,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:15:42,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:15:42,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:15:42,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,624 INFO L138 Inliner]: procedures = 691, calls = 1680, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 894 [2022-11-20 12:15:42,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:15:42,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:15:42,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:15:42,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:15:42,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:15:42,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:15:42,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:15:42,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:15:42,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (1/1) ... [2022-11-20 12:15:42,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:42,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:42,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:15:42,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:15:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:15:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 12:15:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 12:15:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 12:15:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 12:15:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 12:15:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 12:15:42,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-20 12:15:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-20 12:15:42,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:15:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 12:15:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 12:15:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:15:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:15:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:15:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:15:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:15:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 12:15:42,813 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 12:15:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:15:42,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:15:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 12:15:42,813 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 12:15:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-20 12:15:42,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-20 12:15:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 12:15:42,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 12:15:42,814 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 12:15:42,814 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 12:15:42,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-20 12:15:42,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-20 12:15:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 12:15:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 12:15:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:15:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:15:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 12:15:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 12:15:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-20 12:15:42,817 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-20 12:15:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:15:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-20 12:15:42,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-20 12:15:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:15:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:15:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 12:15:42,818 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 12:15:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 12:15:42,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 12:15:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-20 12:15:42,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-20 12:15:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:15:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:15:42,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:15:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:15:43,201 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:15:43,204 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:15:44,527 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:15:44,540 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:15:44,541 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:15:44,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:44 BoogieIcfgContainer [2022-11-20 12:15:44,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:15:44,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:15:44,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:15:44,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:15:44,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:15:39" (1/3) ... [2022-11-20 12:15:44,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a76532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:44, skipping insertion in model container [2022-11-20 12:15:44,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:42" (2/3) ... [2022-11-20 12:15:44,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a76532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:44, skipping insertion in model container [2022-11-20 12:15:44,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:44" (3/3) ... [2022-11-20 12:15:44,565 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2022-11-20 12:15:44,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:15:44,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:15:44,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:15:44,683 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;@64fce356, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:15:44,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:15:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-20 12:15:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 12:15:44,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:44,718 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:44,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1091930304, now seen corresponding path program 1 times [2022-11-20 12:15:44,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:44,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640892189] [2022-11-20 12:15:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:44,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:15:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:15:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:15:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:15:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:15:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 12:15:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:15:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:15:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:15:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 12:15:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:15:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:15:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:15:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:15:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:15:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:15:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:15:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:15:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:15:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:15:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-20 12:15:45,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640892189] [2022-11-20 12:15:45,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640892189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:45,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:45,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:15:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866184384] [2022-11-20 12:15:45,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:45,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:15:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:45,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:15:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:15:45,833 INFO L87 Difference]: Start difference. First operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:15:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:46,924 INFO L93 Difference]: Finished difference Result 615 states and 939 transitions. [2022-11-20 12:15:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:46,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 130 [2022-11-20 12:15:46,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:46,942 INFO L225 Difference]: With dead ends: 615 [2022-11-20 12:15:46,942 INFO L226 Difference]: Without dead ends: 319 [2022-11-20 12:15:46,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:15:46,953 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 212 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:46,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 453 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:15:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-20 12:15:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 293. [2022-11-20 12:15:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 171 states have internal predecessors, (207), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-20 12:15:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 408 transitions. [2022-11-20 12:15:47,089 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 408 transitions. Word has length 130 [2022-11-20 12:15:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:47,090 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 408 transitions. [2022-11-20 12:15:47,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 12:15:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 408 transitions. [2022-11-20 12:15:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 12:15:47,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:47,094 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:47,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:15:47,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:47,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:47,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1112170678, now seen corresponding path program 1 times [2022-11-20 12:15:47,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:47,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808409666] [2022-11-20 12:15:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:47,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:15:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:15:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:15:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:15:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:15:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 12:15:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:15:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:15:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:15:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 12:15:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:15:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:15:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:15:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:15:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:15:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:15:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:15:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:15:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:15:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:15:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-20 12:15:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808409666] [2022-11-20 12:15:47,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808409666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:47,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422280653] [2022-11-20 12:15:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:47,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:47,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:47,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:48,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:15:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:48,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:15:48,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-20 12:15:48,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:48,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422280653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:48,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:48,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-20 12:15:48,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331324179] [2022-11-20 12:15:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:15:48,681 INFO L87 Difference]: Start difference. First operand 293 states and 408 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:15:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:49,389 INFO L93 Difference]: Finished difference Result 562 states and 803 transitions. [2022-11-20 12:15:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:15:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2022-11-20 12:15:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:49,400 INFO L225 Difference]: With dead ends: 562 [2022-11-20 12:15:49,401 INFO L226 Difference]: Without dead ends: 295 [2022-11-20 12:15:49,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:15:49,405 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 429 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:49,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1111 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:15:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-20 12:15:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-11-20 12:15:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 171 states have (on average 1.2163742690058479) internal successors, (208), 173 states have internal predecessors, (208), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2022-11-20 12:15:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 428 transitions. [2022-11-20 12:15:49,478 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 428 transitions. Word has length 130 [2022-11-20 12:15:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:49,480 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 428 transitions. [2022-11-20 12:15:49,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:15:49,481 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 428 transitions. [2022-11-20 12:15:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-20 12:15:49,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:49,491 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:49,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:49,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:49,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash -130840866, now seen corresponding path program 1 times [2022-11-20 12:15:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:49,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936973234] [2022-11-20 12:15:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:49,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:49,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847055251] [2022-11-20 12:15:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:49,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:49,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:49,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:15:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:50,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:15:50,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-20 12:15:50,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:50,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936973234] [2022-11-20 12:15:50,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:50,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847055251] [2022-11-20 12:15:50,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847055251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:50,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:50,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:15:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985278166] [2022-11-20 12:15:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:50,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:50,460 INFO L87 Difference]: Start difference. First operand 295 states and 428 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:15:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:50,569 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2022-11-20 12:15:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:50,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 160 [2022-11-20 12:15:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:50,573 INFO L225 Difference]: With dead ends: 569 [2022-11-20 12:15:50,583 INFO L226 Difference]: Without dead ends: 300 [2022-11-20 12:15:50,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:15:50,586 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 10 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:50,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1211 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:15:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-20 12:15:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2022-11-20 12:15:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2022-11-20 12:15:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 430 transitions. [2022-11-20 12:15:50,630 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 430 transitions. Word has length 160 [2022-11-20 12:15:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:50,631 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 430 transitions. [2022-11-20 12:15:50,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:15:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 430 transitions. [2022-11-20 12:15:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-20 12:15:50,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:50,638 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:50,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:50,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:50,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1971838050, now seen corresponding path program 1 times [2022-11-20 12:15:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:50,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318210807] [2022-11-20 12:15:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:50,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:50,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981525482] [2022-11-20 12:15:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:50,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:50,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:50,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:50,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:15:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:51,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:15:51,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-20 12:15:51,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:51,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:51,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318210807] [2022-11-20 12:15:51,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:51,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981525482] [2022-11-20 12:15:51,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981525482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:51,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:51,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:15:51,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547633178] [2022-11-20 12:15:51,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:15:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:15:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:15:51,676 INFO L87 Difference]: Start difference. First operand 297 states and 430 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:15:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:52,377 INFO L93 Difference]: Finished difference Result 548 states and 792 transitions. [2022-11-20 12:15:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:15:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 160 [2022-11-20 12:15:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:52,380 INFO L225 Difference]: With dead ends: 548 [2022-11-20 12:15:52,381 INFO L226 Difference]: Without dead ends: 297 [2022-11-20 12:15:52,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:15:52,383 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 508 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:52,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1320 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:15:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-20 12:15:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-11-20 12:15:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2022-11-20 12:15:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2022-11-20 12:15:52,410 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 160 [2022-11-20 12:15:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:52,411 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2022-11-20 12:15:52,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:15:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2022-11-20 12:15:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-20 12:15:52,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:52,414 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:52,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:52,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -228114873, now seen corresponding path program 2 times [2022-11-20 12:15:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:52,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989193318] [2022-11-20 12:15:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:52,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:52,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348869645] [2022-11-20 12:15:52,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:52,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:52,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:52,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:52,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:15:53,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:15:53,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:53,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:15:53,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-20 12:15:53,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:53,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989193318] [2022-11-20 12:15:53,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:53,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348869645] [2022-11-20 12:15:53,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348869645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:53,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:53,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:15:53,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768383202] [2022-11-20 12:15:53,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:53,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:15:53,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:53,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:15:53,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:15:53,621 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:15:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:54,435 INFO L93 Difference]: Finished difference Result 554 states and 797 transitions. [2022-11-20 12:15:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 175 [2022-11-20 12:15:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:54,438 INFO L225 Difference]: With dead ends: 554 [2022-11-20 12:15:54,439 INFO L226 Difference]: Without dead ends: 309 [2022-11-20 12:15:54,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:15:54,441 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 524 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:54,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1900 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:15:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-20 12:15:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-11-20 12:15:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2122905027932962) internal successors, (217), 181 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2022-11-20 12:15:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 444 transitions. [2022-11-20 12:15:54,483 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 444 transitions. Word has length 175 [2022-11-20 12:15:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:54,483 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 444 transitions. [2022-11-20 12:15:54,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:15:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 444 transitions. [2022-11-20 12:15:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-20 12:15:54,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:54,489 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:54,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:54,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:54,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:54,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2146106871, now seen corresponding path program 1 times [2022-11-20 12:15:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:54,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796502487] [2022-11-20 12:15:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:54,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:54,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541561459] [2022-11-20 12:15:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:54,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:54,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:54,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:54,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:15:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:55,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:15:55,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-20 12:15:55,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:55,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:55,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796502487] [2022-11-20 12:15:55,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:55,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541561459] [2022-11-20 12:15:55,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541561459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:55,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:55,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:15:55,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914091380] [2022-11-20 12:15:55,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:55,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:55,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:55,625 INFO L87 Difference]: Start difference. First operand 309 states and 444 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:15:55,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:55,990 INFO L93 Difference]: Finished difference Result 698 states and 1038 transitions. [2022-11-20 12:15:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:15:55,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2022-11-20 12:15:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:55,998 INFO L225 Difference]: With dead ends: 698 [2022-11-20 12:15:55,999 INFO L226 Difference]: Without dead ends: 438 [2022-11-20 12:15:56,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:15:56,006 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 174 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:56,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2485 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:15:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-20 12:15:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 315. [2022-11-20 12:15:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 184 states have internal predecessors, (220), 109 states have call successors, (109), 22 states have call predecessors, (109), 23 states have return successors, (124), 108 states have call predecessors, (124), 108 states have call successors, (124) [2022-11-20 12:15:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 453 transitions. [2022-11-20 12:15:56,056 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 453 transitions. Word has length 205 [2022-11-20 12:15:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:56,058 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 453 transitions. [2022-11-20 12:15:56,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:15:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 453 transitions. [2022-11-20 12:15:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-20 12:15:56,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:56,062 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:56,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 12:15:56,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:15:56,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1414139445, now seen corresponding path program 1 times [2022-11-20 12:15:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407805960] [2022-11-20 12:15:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:56,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:56,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751041069] [2022-11-20 12:15:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:56,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:56,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:56,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:56,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:15:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:57,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:15:57,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-20 12:15:57,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:57,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407805960] [2022-11-20 12:15:57,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:57,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751041069] [2022-11-20 12:15:57,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751041069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:57,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:57,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:15:57,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453245921] [2022-11-20 12:15:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:57,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:15:57,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:57,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:15:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:15:57,123 INFO L87 Difference]: Start difference. First operand 315 states and 453 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 12:15:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:57,342 INFO L93 Difference]: Finished difference Result 575 states and 825 transitions. [2022-11-20 12:15:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) Word has length 205 [2022-11-20 12:15:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:57,345 INFO L225 Difference]: With dead ends: 575 [2022-11-20 12:15:57,345 INFO L226 Difference]: Without dead ends: 309 [2022-11-20 12:15:57,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:57,347 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 2 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:57,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1468 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:15:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-20 12:15:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-11-20 12:15:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2067039106145252) internal successors, (216), 181 states have internal predecessors, (216), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2022-11-20 12:15:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 443 transitions. [2022-11-20 12:15:57,378 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 443 transitions. Word has length 205 [2022-11-20 12:15:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:57,379 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 443 transitions. [2022-11-20 12:15:57,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 12:15:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 443 transitions. [2022-11-20 12:15:57,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-20 12:15:57,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:57,382 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:57,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:57,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:57,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:57,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1115065973, now seen corresponding path program 1 times [2022-11-20 12:15:57,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:57,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715814252] [2022-11-20 12:15:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:57,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:57,711 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:57,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307182672] [2022-11-20 12:15:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:57,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:57,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:57,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:57,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:15:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:58,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:15:58,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-20 12:15:58,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:58,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:58,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715814252] [2022-11-20 12:15:58,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:58,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307182672] [2022-11-20 12:15:58,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307182672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:58,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:58,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:15:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89966499] [2022-11-20 12:15:58,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:58,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:15:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:15:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:15:58,614 INFO L87 Difference]: Start difference. First operand 309 states and 443 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:15:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:58,950 INFO L93 Difference]: Finished difference Result 711 states and 1055 transitions. [2022-11-20 12:15:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:58,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2022-11-20 12:15:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:58,955 INFO L225 Difference]: With dead ends: 711 [2022-11-20 12:15:58,955 INFO L226 Difference]: Without dead ends: 451 [2022-11-20 12:15:58,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:15:58,960 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 177 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:58,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 3525 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:15:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-20 12:15:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 328. [2022-11-20 12:15:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 191 states have (on average 1.198952879581152) internal successors, (229), 193 states have internal predecessors, (229), 112 states have call successors, (112), 22 states have call predecessors, (112), 24 states have return successors, (129), 112 states have call predecessors, (129), 111 states have call successors, (129) [2022-11-20 12:15:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2022-11-20 12:15:59,000 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 205 [2022-11-20 12:15:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:59,001 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2022-11-20 12:15:59,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:15:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2022-11-20 12:15:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-20 12:15:59,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:59,005 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:59,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:59,229 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 383098547, now seen corresponding path program 1 times [2022-11-20 12:15:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:59,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265394644] [2022-11-20 12:15:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:59,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:59,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:59,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648233297] [2022-11-20 12:15:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:59,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:59,347 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:59,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:16:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:00,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:16:00,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-20 12:16:00,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:00,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265394644] [2022-11-20 12:16:00,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:00,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648233297] [2022-11-20 12:16:00,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648233297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:00,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:00,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:16:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822761012] [2022-11-20 12:16:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:00,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:16:00,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:16:00,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:16:00,215 INFO L87 Difference]: Start difference. First operand 328 states and 470 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:16:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:00,531 INFO L93 Difference]: Finished difference Result 591 states and 845 transitions. [2022-11-20 12:16:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:16:00,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2022-11-20 12:16:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:00,534 INFO L225 Difference]: With dead ends: 591 [2022-11-20 12:16:00,535 INFO L226 Difference]: Without dead ends: 312 [2022-11-20 12:16:00,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:16:00,537 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 173 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:00,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1650 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:16:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-20 12:16:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-11-20 12:16:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 181 states have (on average 1.1988950276243093) internal successors, (217), 184 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 24 states have return successors, (122), 105 states have call predecessors, (122), 105 states have call successors, (122) [2022-11-20 12:16:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 445 transitions. [2022-11-20 12:16:00,568 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 445 transitions. Word has length 205 [2022-11-20 12:16:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:00,569 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 445 transitions. [2022-11-20 12:16:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:16:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 445 transitions. [2022-11-20 12:16:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-20 12:16:00,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:00,573 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:00,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:00,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 12:16:00,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1036256056, now seen corresponding path program 1 times [2022-11-20 12:16:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:00,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025072777] [2022-11-20 12:16:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:00,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:00,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916216620] [2022-11-20 12:16:00,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:00,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:00,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:00,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:00,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:16:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:01,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-20 12:16:01,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:01,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:16:01,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:16:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-20 12:16:02,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:02,830 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-20 12:16:02,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-20 12:16:02,845 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-20 12:16:02,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-20 12:16:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-11-20 12:16:02,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025072777] [2022-11-20 12:16:02,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:02,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916216620] [2022-11-20 12:16:02,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916216620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:02,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:02,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 21 [2022-11-20 12:16:02,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385245573] [2022-11-20 12:16:02,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:02,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:16:02,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:16:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:16:02,907 INFO L87 Difference]: Start difference. First operand 312 states and 445 transitions. Second operand has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2022-11-20 12:16:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:05,253 INFO L93 Difference]: Finished difference Result 615 states and 898 transitions. [2022-11-20 12:16:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:16:05,254 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) Word has length 216 [2022-11-20 12:16:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:05,257 INFO L225 Difference]: With dead ends: 615 [2022-11-20 12:16:05,257 INFO L226 Difference]: Without dead ends: 325 [2022-11-20 12:16:05,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2022-11-20 12:16:05,260 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 143 mSDsluCounter, 5162 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:05,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 5509 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1869 Invalid, 0 Unknown, 119 Unchecked, 1.8s Time] [2022-11-20 12:16:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-20 12:16:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2022-11-20 12:16:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 183 states have (on average 1.1967213114754098) internal successors, (219), 187 states have internal predecessors, (219), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2022-11-20 12:16:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2022-11-20 12:16:05,299 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 216 [2022-11-20 12:16:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:05,300 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2022-11-20 12:16:05,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2022-11-20 12:16:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2022-11-20 12:16:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-20 12:16:05,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:05,304 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:05,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:05,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:05,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:05,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:05,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1285474944, now seen corresponding path program 1 times [2022-11-20 12:16:05,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:05,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136972394] [2022-11-20 12:16:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:05,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:05,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708285561] [2022-11-20 12:16:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:05,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:05,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:05,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:05,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:16:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:06,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:16:06,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-20 12:16:06,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:06,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:06,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136972394] [2022-11-20 12:16:06,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:06,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708285561] [2022-11-20 12:16:06,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708285561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:06,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:06,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:06,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622141882] [2022-11-20 12:16:06,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:06,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:06,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:06,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:06,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:16:06,533 INFO L87 Difference]: Start difference. First operand 315 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:16:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:06,933 INFO L93 Difference]: Finished difference Result 609 states and 959 transitions. [2022-11-20 12:16:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:16:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2022-11-20 12:16:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:06,937 INFO L225 Difference]: With dead ends: 609 [2022-11-20 12:16:06,937 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 12:16:06,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:16:06,940 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 10 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:06,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1569 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:16:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 12:16:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 316. [2022-11-20 12:16:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 188 states have internal predecessors, (220), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2022-11-20 12:16:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 471 transitions. [2022-11-20 12:16:06,981 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 471 transitions. Word has length 218 [2022-11-20 12:16:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:06,982 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 471 transitions. [2022-11-20 12:16:06,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:16:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 471 transitions. [2022-11-20 12:16:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-20 12:16:06,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:06,986 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:07,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:16:07,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash -82985666, now seen corresponding path program 1 times [2022-11-20 12:16:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:07,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628333845] [2022-11-20 12:16:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:07,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:07,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628689895] [2022-11-20 12:16:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:07,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:07,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:07,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:07,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:16:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:08,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 12:16:08,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:09,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-20 12:16:09,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-20 12:16:09,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-20 12:16:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-20 12:16:09,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:10,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:16:10,906 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 12:16:11,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-20 12:16:11,182 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-20 12:16:11,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-20 12:16:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-20 12:16:11,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:11,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628333845] [2022-11-20 12:16:11,315 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:11,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628689895] [2022-11-20 12:16:11,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628689895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:11,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:11,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2022-11-20 12:16:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797882578] [2022-11-20 12:16:11,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:11,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:16:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:11,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:16:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-11-20 12:16:11,318 INFO L87 Difference]: Start difference. First operand 316 states and 471 transitions. Second operand has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2022-11-20 12:16:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:15,691 INFO L93 Difference]: Finished difference Result 781 states and 1231 transitions. [2022-11-20 12:16:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:16:15,692 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) Word has length 218 [2022-11-20 12:16:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:15,703 INFO L225 Difference]: With dead ends: 781 [2022-11-20 12:16:15,703 INFO L226 Difference]: Without dead ends: 500 [2022-11-20 12:16:15,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 401 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=1355, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 12:16:15,711 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 532 mSDsluCounter, 5008 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 5425 SdHoareTripleChecker+Invalid, 4684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1203 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:15,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 5425 Invalid, 4684 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [164 Valid, 3317 Invalid, 0 Unknown, 1203 Unchecked, 3.6s Time] [2022-11-20 12:16:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-20 12:16:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2022-11-20 12:16:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 216 states have (on average 1.1666666666666667) internal successors, (252), 220 states have internal predecessors, (252), 114 states have call successors, (114), 30 states have call predecessors, (114), 34 states have return successors, (177), 114 states have call predecessors, (177), 113 states have call successors, (177) [2022-11-20 12:16:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 543 transitions. [2022-11-20 12:16:15,787 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 543 transitions. Word has length 218 [2022-11-20 12:16:15,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:15,788 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 543 transitions. [2022-11-20 12:16:15,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2022-11-20 12:16:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 543 transitions. [2022-11-20 12:16:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-20 12:16:15,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:15,792 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:15,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:16,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:16:16,013 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:16,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1265933822, now seen corresponding path program 1 times [2022-11-20 12:16:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:16,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667891193] [2022-11-20 12:16:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:16,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:16,111 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504359492] [2022-11-20 12:16:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:16,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:16,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:16,113 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:16,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:16:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:16,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 12:16:16,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:16,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:16:17,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:17,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:16:17,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:17,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:16:17,442 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1636 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1636))) (exists ((v_ArrVal_1635 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1635) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:16:17,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:17,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:16:17,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:17,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:16:17,894 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:16:17,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:16:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 156 proven. 4 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-20 12:16:17,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:18,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667891193] [2022-11-20 12:16:18,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:18,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504359492] [2022-11-20 12:16:18,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504359492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:18,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:16:18,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-20 12:16:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761495610] [2022-11-20 12:16:18,360 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:18,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:16:18,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:18,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:16:18,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=198, Unknown=3, NotChecked=28, Total=272 [2022-11-20 12:16:18,361 INFO L87 Difference]: Start difference. First operand 365 states and 543 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:16:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:20,306 INFO L93 Difference]: Finished difference Result 725 states and 1173 transitions. [2022-11-20 12:16:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:16:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 218 [2022-11-20 12:16:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:20,312 INFO L225 Difference]: With dead ends: 725 [2022-11-20 12:16:20,312 INFO L226 Difference]: Without dead ends: 427 [2022-11-20 12:16:20,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 367 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=252, Unknown=3, NotChecked=32, Total=342 [2022-11-20 12:16:20,316 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 116 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 4024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2351 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:20,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2083 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1558 Invalid, 0 Unknown, 2351 Unchecked, 1.7s Time] [2022-11-20 12:16:20,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-20 12:16:20,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 384. [2022-11-20 12:16:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 230 states have (on average 1.1695652173913043) internal successors, (269), 236 states have internal predecessors, (269), 115 states have call successors, (115), 31 states have call predecessors, (115), 38 states have return successors, (206), 116 states have call predecessors, (206), 114 states have call successors, (206) [2022-11-20 12:16:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 590 transitions. [2022-11-20 12:16:20,406 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 590 transitions. Word has length 218 [2022-11-20 12:16:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:20,406 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 590 transitions. [2022-11-20 12:16:20,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:16:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 590 transitions. [2022-11-20 12:16:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-20 12:16:20,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:20,409 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:20,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:20,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:16:20,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash -989000721, now seen corresponding path program 1 times [2022-11-20 12:16:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:20,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125717826] [2022-11-20 12:16:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:20,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:20,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738590783] [2022-11-20 12:16:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:20,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:20,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:20,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:20,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:16:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:21,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-20 12:16:21,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:21,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:16:21,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:16:21,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:16:21,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:16:21,870 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:16:21,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:16:22,039 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1839 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1839))) is different from true [2022-11-20 12:16:22,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:22,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:16:22,393 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:16:22,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:16:22,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:17:11,291 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1841 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1841)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 12:17:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 274 proven. 53 refuted. 0 times theorem prover too weak. 132 trivial. 3 not checked. [2022-11-20 12:17:19,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:22,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:17:22,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125717826] [2022-11-20 12:17:22,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:17:22,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738590783] [2022-11-20 12:17:22,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738590783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:17:22,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:17:22,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-20 12:17:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128817082] [2022-11-20 12:17:22,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:17:22,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:17:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:17:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=974, Unknown=52, NotChecked=130, Total=1260 [2022-11-20 12:17:22,058 INFO L87 Difference]: Start difference. First operand 384 states and 590 transitions. Second operand has 35 states, 32 states have (on average 3.21875) internal successors, (103), 29 states have internal predecessors, (103), 13 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) [2022-11-20 12:17:39,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:39,192 INFO L93 Difference]: Finished difference Result 796 states and 1275 transitions. [2022-11-20 12:17:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 12:17:39,192 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.21875) internal successors, (103), 29 states have internal predecessors, (103), 13 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) Word has length 224 [2022-11-20 12:17:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:39,196 INFO L225 Difference]: With dead ends: 796 [2022-11-20 12:17:39,196 INFO L226 Difference]: Without dead ends: 492 [2022-11-20 12:17:39,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 287 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 74.3s TimeCoverageRelationStatistics Valid=200, Invalid=2162, Unknown=96, NotChecked=194, Total=2652 [2022-11-20 12:17:39,200 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 294 mSDsluCounter, 4077 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 4440 SdHoareTripleChecker+Invalid, 7034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4344 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:39,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 4440 Invalid, 7034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2307 Invalid, 0 Unknown, 4344 Unchecked, 2.2s Time] [2022-11-20 12:17:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-20 12:17:39,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 448. [2022-11-20 12:17:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 272 states have (on average 1.1544117647058822) internal successors, (314), 280 states have internal predecessors, (314), 127 states have call successors, (127), 39 states have call predecessors, (127), 48 states have return successors, (248), 128 states have call predecessors, (248), 126 states have call successors, (248) [2022-11-20 12:17:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 689 transitions. [2022-11-20 12:17:39,267 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 689 transitions. Word has length 224 [2022-11-20 12:17:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:39,267 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 689 transitions. [2022-11-20 12:17:39,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.21875) internal successors, (103), 29 states have internal predecessors, (103), 13 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) [2022-11-20 12:17:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 689 transitions. [2022-11-20 12:17:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-20 12:17:39,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:39,270 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:39,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:39,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:17:39,482 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:39,482 INFO L85 PathProgramCache]: Analyzing trace with hash 92048094, now seen corresponding path program 1 times [2022-11-20 12:17:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:17:39,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171217474] [2022-11-20 12:17:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:39,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:17:39,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:17:39,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921560034] [2022-11-20 12:17:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:39,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:17:39,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:17:39,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:17:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:17:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:40,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 3045 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-20 12:17:40,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:40,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:17:40,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:17:40,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:17:40,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:17:40,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:17:40,796 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:17:40,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:17:40,955 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2039 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2039) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-20 12:17:41,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:41,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:17:41,336 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:17:41,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:17:41,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:18:30,182 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2041 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2041)))) is different from true [2022-11-20 12:18:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 274 proven. 53 refuted. 0 times theorem prover too weak. 132 trivial. 3 not checked. [2022-11-20 12:18:38,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:40,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171217474] [2022-11-20 12:18:40,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:18:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921560034] [2022-11-20 12:18:40,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921560034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:40,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:18:40,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-20 12:18:40,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590934031] [2022-11-20 12:18:40,891 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:40,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:18:40,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:18:40,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=966, Unknown=60, NotChecked=130, Total=1260 [2022-11-20 12:18:40,893 INFO L87 Difference]: Start difference. First operand 448 states and 689 transitions. Second operand has 35 states, 32 states have (on average 3.3125) internal successors, (106), 29 states have internal predecessors, (106), 13 states have call successors, (33), 10 states have call predecessors, (33), 12 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-20 12:19:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:04,290 INFO L93 Difference]: Finished difference Result 812 states and 1292 transitions. [2022-11-20 12:19:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 12:19:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.3125) internal successors, (106), 29 states have internal predecessors, (106), 13 states have call successors, (33), 10 states have call predecessors, (33), 12 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) Word has length 229 [2022-11-20 12:19:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:04,295 INFO L225 Difference]: With dead ends: 812 [2022-11-20 12:19:04,295 INFO L226 Difference]: Without dead ends: 510 [2022-11-20 12:19:04,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 290 SyntacticMatches, 12 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 80.6s TimeCoverageRelationStatistics Valid=271, Invalid=2503, Unknown=96, NotChecked=210, Total=3080 [2022-11-20 12:19:04,299 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 241 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 7442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4504 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:04,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 3895 Invalid, 7442 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [258 Valid, 2680 Invalid, 0 Unknown, 4504 Unchecked, 2.1s Time] [2022-11-20 12:19:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-20 12:19:04,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 487. [2022-11-20 12:19:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 297 states have (on average 1.1447811447811447) internal successors, (340), 304 states have internal predecessors, (340), 135 states have call successors, (135), 46 states have call predecessors, (135), 54 states have return successors, (234), 136 states have call predecessors, (234), 134 states have call successors, (234) [2022-11-20 12:19:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 709 transitions. [2022-11-20 12:19:04,364 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 709 transitions. Word has length 229 [2022-11-20 12:19:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:04,364 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 709 transitions. [2022-11-20 12:19:04,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.3125) internal successors, (106), 29 states have internal predecessors, (106), 13 states have call successors, (33), 10 states have call predecessors, (33), 12 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-20 12:19:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 709 transitions. [2022-11-20 12:19:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-20 12:19:04,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:04,367 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:04,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:04,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:19:04,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2122296164, now seen corresponding path program 1 times [2022-11-20 12:19:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:04,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422075754] [2022-11-20 12:19:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:04,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:19:04,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304639150] [2022-11-20 12:19:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:04,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:04,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:04,679 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:04,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:19:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:05,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 189 conjunts are in the unsatisfiable core [2022-11-20 12:19:05,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:05,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:19:05,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:19:05,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:19:05,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:19:06,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:19:06,114 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:19:06,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:19:06,366 WARN L859 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2239 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2239)))) is different from true [2022-11-20 12:19:06,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:19:06,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:19:06,871 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:19:06,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:19:08,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:19:08,444 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2241 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2240 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2240)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2241))))) is different from true [2022-11-20 12:19:08,712 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_2241 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2240 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2241))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2240))))) is different from true [2022-11-20 12:19:08,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-20 12:19:08,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:19:08,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:19:08,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:19:08,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-20 12:19:53,359 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2243 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2243)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 12:20:01,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:20:01,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:20:01,800 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 12:20:01,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 12:20:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 264 proven. 117 refuted. 2 times theorem prover too weak. 65 trivial. 16 not checked. [2022-11-20 12:20:01,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:04,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:04,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422075754] [2022-11-20 12:20:04,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:20:04,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304639150] [2022-11-20 12:20:04,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304639150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:04,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:20:04,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2022-11-20 12:20:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136457999] [2022-11-20 12:20:04,573 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:04,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-20 12:20:04,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-20 12:20:04,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2527, Unknown=146, NotChecked=428, Total=3306 [2022-11-20 12:20:04,576 INFO L87 Difference]: Start difference. First operand 487 states and 709 transitions. Second operand has 51 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 18 states have call successors, (35), 12 states have call predecessors, (35), 16 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-20 12:20:24,577 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2243 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2243)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2241 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2240 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2240)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2241)))))) is different from true [2022-11-20 12:20:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:36,767 INFO L93 Difference]: Finished difference Result 880 states and 1375 transitions. [2022-11-20 12:20:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-20 12:20:36,768 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 18 states have call successors, (35), 12 states have call predecessors, (35), 16 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) Word has length 231 [2022-11-20 12:20:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:36,803 INFO L225 Difference]: With dead ends: 880 [2022-11-20 12:20:36,803 INFO L226 Difference]: Without dead ends: 588 [2022-11-20 12:20:36,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 236 SyntacticMatches, 16 SemanticMatches, 85 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=522, Invalid=5916, Unknown=224, NotChecked=820, Total=7482 [2022-11-20 12:20:36,807 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 515 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 6882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4904 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:36,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 2263 Invalid, 6882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1671 Invalid, 0 Unknown, 4904 Unchecked, 1.7s Time] [2022-11-20 12:20:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-11-20 12:20:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 564. [2022-11-20 12:20:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 354 states have (on average 1.1412429378531073) internal successors, (404), 366 states have internal predecessors, (404), 143 states have call successors, (143), 53 states have call predecessors, (143), 66 states have return successors, (284), 144 states have call predecessors, (284), 142 states have call successors, (284) [2022-11-20 12:20:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 831 transitions. [2022-11-20 12:20:36,881 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 831 transitions. Word has length 231 [2022-11-20 12:20:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:36,882 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 831 transitions. [2022-11-20 12:20:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 18 states have call successors, (35), 12 states have call predecessors, (35), 16 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-20 12:20:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 831 transitions. [2022-11-20 12:20:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:20:36,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:36,885 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:36,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:37,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:37,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:37,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash 151973010, now seen corresponding path program 1 times [2022-11-20 12:20:37,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:37,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858109627] [2022-11-20 12:20:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:37,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:37,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:20:37,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113390183] [2022-11-20 12:20:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:37,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:37,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:37,181 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:37,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:20:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:37,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:20:38,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 12:20:38,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:20:38,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858109627] [2022-11-20 12:20:38,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:20:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113390183] [2022-11-20 12:20:38,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113390183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:38,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:38,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:20:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982266568] [2022-11-20 12:20:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:20:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:20:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:20:38,137 INFO L87 Difference]: Start difference. First operand 564 states and 831 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 12:20:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:38,697 INFO L93 Difference]: Finished difference Result 870 states and 1363 transitions. [2022-11-20 12:20:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:20:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 237 [2022-11-20 12:20:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:38,703 INFO L225 Difference]: With dead ends: 870 [2022-11-20 12:20:38,703 INFO L226 Difference]: Without dead ends: 560 [2022-11-20 12:20:38,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:20:38,706 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 9 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:38,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4384 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:20:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-11-20 12:20:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-11-20 12:20:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 352 states have (on average 1.1363636363636365) internal successors, (400), 363 states have internal predecessors, (400), 142 states have call successors, (142), 53 states have call predecessors, (142), 65 states have return successors, (297), 143 states have call predecessors, (297), 141 states have call successors, (297) [2022-11-20 12:20:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 839 transitions. [2022-11-20 12:20:38,780 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 839 transitions. Word has length 237 [2022-11-20 12:20:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:38,781 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 839 transitions. [2022-11-20 12:20:38,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 12:20:38,781 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 839 transitions. [2022-11-20 12:20:38,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-20 12:20:38,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:38,784 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:38,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-20 12:20:39,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:20:39,001 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:39,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1768465372, now seen corresponding path program 2 times [2022-11-20 12:20:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:39,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908313265] [2022-11-20 12:20:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:39,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:39,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:20:39,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230483719] [2022-11-20 12:20:39,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:20:39,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:39,082 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:39,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:20:40,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:20:40,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:20:40,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-20 12:20:40,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:41,007 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2607 Int) (v_ArrVal_2606 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2607)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2606)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:20:41,026 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2607 Int) (v_ArrVal_2606 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2607))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2606)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:20:41,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:20:41,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-20 12:20:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:20:41,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-20 12:20:41,377 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2608 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2610 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2608)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2610))))) is different from true [2022-11-20 12:20:49,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:20:49,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:20:49,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-20 12:20:49,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:20:49,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:20:49,821 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 12:20:49,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 12:20:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 320 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 19 not checked. [2022-11-20 12:20:49,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:52,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:52,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908313265] [2022-11-20 12:20:52,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:20:52,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230483719] [2022-11-20 12:20:52,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230483719] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:52,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:20:52,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-20 12:20:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114303116] [2022-11-20 12:20:52,212 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:52,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:20:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:52,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:20:52,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=310, Unknown=22, NotChecked=114, Total=506 [2022-11-20 12:20:52,214 INFO L87 Difference]: Start difference. First operand 560 states and 839 transitions. Second operand has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 22 states have internal predecessors, (113), 10 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-20 12:20:52,503 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2608 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2610 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2608)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2610))))) (exists ((v_ArrVal_2607 Int) (v_ArrVal_2606 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2607)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2606)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-20 12:21:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:05,781 INFO L93 Difference]: Finished difference Result 1010 states and 1717 transitions. [2022-11-20 12:21:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:21:05,781 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 22 states have internal predecessors, (113), 10 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) Word has length 231 [2022-11-20 12:21:05,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:05,792 INFO L225 Difference]: With dead ends: 1010 [2022-11-20 12:21:05,793 INFO L226 Difference]: Without dead ends: 704 [2022-11-20 12:21:05,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 273 SyntacticMatches, 14 SemanticMatches, 28 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=101, Invalid=539, Unknown=26, NotChecked=204, Total=870 [2022-11-20 12:21:05,796 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 201 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 6411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3446 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:05,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 2980 Invalid, 6411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2850 Invalid, 0 Unknown, 3446 Unchecked, 2.6s Time] [2022-11-20 12:21:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-20 12:21:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 594. [2022-11-20 12:21:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 374 states have (on average 1.1283422459893049) internal successors, (422), 384 states have internal predecessors, (422), 150 states have call successors, (150), 60 states have call predecessors, (150), 69 states have return successors, (310), 149 states have call predecessors, (310), 149 states have call successors, (310) [2022-11-20 12:21:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 882 transitions. [2022-11-20 12:21:05,889 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 882 transitions. Word has length 231 [2022-11-20 12:21:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:05,890 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 882 transitions. [2022-11-20 12:21:05,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 22 states have internal predecessors, (113), 10 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-20 12:21:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 882 transitions. [2022-11-20 12:21:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-20 12:21:05,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:05,893 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:05,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:06,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:21:06,094 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:06,095 INFO L85 PathProgramCache]: Analyzing trace with hash -214089390, now seen corresponding path program 1 times [2022-11-20 12:21:06,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:06,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006210300] [2022-11-20 12:21:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:06,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:21:06,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462153303] [2022-11-20 12:21:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:06,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:06,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:06,215 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:06,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:21:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:07,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:21:07,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:21:07,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:07,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:07,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006210300] [2022-11-20 12:21:07,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:21:07,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462153303] [2022-11-20 12:21:07,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462153303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:07,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:07,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:21:07,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829656886] [2022-11-20 12:21:07,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:07,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:21:07,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:21:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:21:07,193 INFO L87 Difference]: Start difference. First operand 594 states and 882 transitions. Second operand has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:21:07,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:07,736 INFO L93 Difference]: Finished difference Result 891 states and 1395 transitions. [2022-11-20 12:21:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:21:07,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) Word has length 249 [2022-11-20 12:21:07,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:07,741 INFO L225 Difference]: With dead ends: 891 [2022-11-20 12:21:07,741 INFO L226 Difference]: Without dead ends: 594 [2022-11-20 12:21:07,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:21:07,744 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 11 mSDsluCounter, 3944 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:07,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4352 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:21:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-20 12:21:07,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 591. [2022-11-20 12:21:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 372 states have (on average 1.1290322580645162) internal successors, (420), 381 states have internal predecessors, (420), 150 states have call successors, (150), 60 states have call predecessors, (150), 68 states have return successors, (285), 149 states have call predecessors, (285), 149 states have call successors, (285) [2022-11-20 12:21:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 855 transitions. [2022-11-20 12:21:07,822 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 855 transitions. Word has length 249 [2022-11-20 12:21:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:07,823 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 855 transitions. [2022-11-20 12:21:07,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:21:07,823 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 855 transitions. [2022-11-20 12:21:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-20 12:21:07,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:07,826 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:07,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-20 12:21:08,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:08,037 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1056524352, now seen corresponding path program 2 times [2022-11-20 12:21:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622744241] [2022-11-20 12:21:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:08,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:21:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783567727] [2022-11-20 12:21:08,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:21:08,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:08,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:08,118 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:08,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:21:09,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:21:09,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:09,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 12:21:09,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-20 12:21:09,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:09,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622744241] [2022-11-20 12:21:09,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:21:09,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783567727] [2022-11-20 12:21:09,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783567727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:09,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:09,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:21:09,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005723600] [2022-11-20 12:21:09,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:09,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:21:09,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:21:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:21:09,200 INFO L87 Difference]: Start difference. First operand 591 states and 855 transitions. Second operand has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:21:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:09,750 INFO L93 Difference]: Finished difference Result 879 states and 1334 transitions. [2022-11-20 12:21:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:21:09,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 243 [2022-11-20 12:21:09,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:09,756 INFO L225 Difference]: With dead ends: 879 [2022-11-20 12:21:09,756 INFO L226 Difference]: Without dead ends: 595 [2022-11-20 12:21:09,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:21:09,759 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 12 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4752 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:09,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4752 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:21:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-20 12:21:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 591. [2022-11-20 12:21:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 372 states have (on average 1.1290322580645162) internal successors, (420), 381 states have internal predecessors, (420), 150 states have call successors, (150), 60 states have call predecessors, (150), 68 states have return successors, (282), 149 states have call predecessors, (282), 149 states have call successors, (282) [2022-11-20 12:21:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 852 transitions. [2022-11-20 12:21:09,837 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 852 transitions. Word has length 243 [2022-11-20 12:21:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:09,837 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 852 transitions. [2022-11-20 12:21:09,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-20 12:21:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 852 transitions. [2022-11-20 12:21:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:21:09,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:09,841 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:09,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:10,053 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 696464366, now seen corresponding path program 3 times [2022-11-20 12:21:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:10,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125854123] [2022-11-20 12:21:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:10,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:21:10,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906856506] [2022-11-20 12:21:10,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:21:10,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:10,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:10,141 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:10,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 12:21:12,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-20 12:21:12,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:12,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 3081 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:21:12,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:13,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 12:21:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:21:13,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:13,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:13,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125854123] [2022-11-20 12:21:13,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:21:13,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906856506] [2022-11-20 12:21:13,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906856506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:13,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:13,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:21:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069975552] [2022-11-20 12:21:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:21:13,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:21:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:21:13,158 INFO L87 Difference]: Start difference. First operand 591 states and 852 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-20 12:21:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:14,556 INFO L93 Difference]: Finished difference Result 1138 states and 1821 transitions. [2022-11-20 12:21:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:21:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 237 [2022-11-20 12:21:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:14,563 INFO L225 Difference]: With dead ends: 1138 [2022-11-20 12:21:14,563 INFO L226 Difference]: Without dead ends: 741 [2022-11-20 12:21:14,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 222 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:21:14,566 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 252 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:14,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 3482 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 954 Invalid, 0 Unknown, 176 Unchecked, 1.2s Time] [2022-11-20 12:21:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-20 12:21:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 593. [2022-11-20 12:21:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 374 states have (on average 1.1176470588235294) internal successors, (418), 382 states have internal predecessors, (418), 149 states have call successors, (149), 62 states have call predecessors, (149), 69 states have return successors, (275), 148 states have call predecessors, (275), 148 states have call successors, (275) [2022-11-20 12:21:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 842 transitions. [2022-11-20 12:21:14,658 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 842 transitions. Word has length 237 [2022-11-20 12:21:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:14,659 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 842 transitions. [2022-11-20 12:21:14,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-20 12:21:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 842 transitions. [2022-11-20 12:21:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:21:14,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:14,662 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:14,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:14,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:14,876 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:14,877 INFO L85 PathProgramCache]: Analyzing trace with hash -673374028, now seen corresponding path program 1 times [2022-11-20 12:21:14,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:14,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013346919] [2022-11-20 12:21:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:14,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:14,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:21:14,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752650763] [2022-11-20 12:21:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:14,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:14,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:14,954 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:14,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 12:21:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:15,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:21:15,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-20 12:21:15,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:15,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:15,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013346919] [2022-11-20 12:21:15,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:21:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752650763] [2022-11-20 12:21:15,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752650763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:15,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:15,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:21:15,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357632628] [2022-11-20 12:21:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:15,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:21:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:21:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:21:15,835 INFO L87 Difference]: Start difference. First operand 593 states and 842 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 12:21:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:16,179 INFO L93 Difference]: Finished difference Result 894 states and 1382 transitions. [2022-11-20 12:21:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:21:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 237 [2022-11-20 12:21:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:16,184 INFO L225 Difference]: With dead ends: 894 [2022-11-20 12:21:16,184 INFO L226 Difference]: Without dead ends: 594 [2022-11-20 12:21:16,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:21:16,187 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 13 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:16,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1537 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:21:16,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-20 12:21:16,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 589. [2022-11-20 12:21:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 371 states have (on average 1.110512129380054) internal successors, (412), 378 states have internal predecessors, (412), 149 states have call successors, (149), 62 states have call predecessors, (149), 68 states have return successors, (247), 148 states have call predecessors, (247), 148 states have call successors, (247) [2022-11-20 12:21:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 808 transitions. [2022-11-20 12:21:16,266 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 808 transitions. Word has length 237 [2022-11-20 12:21:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:16,267 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 808 transitions. [2022-11-20 12:21:16,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 12:21:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 808 transitions. [2022-11-20 12:21:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 12:21:16,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:16,270 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:16,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:16,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:16,486 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:16,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:16,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1424672400, now seen corresponding path program 2 times [2022-11-20 12:21:16,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:16,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310924931] [2022-11-20 12:21:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:16,561 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:21:16,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216097216] [2022-11-20 12:21:16,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:21:16,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:16,563 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:16,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 12:21:17,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:21:17,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:17,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 227 conjunts are in the unsatisfiable core [2022-11-20 12:21:17,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:17,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:21:17,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:21:17,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:21:17,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:21:17,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:21:17,929 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:21:17,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:21:18,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:21:18,136 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3521 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3521) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-20 12:21:18,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:21:18,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:21:18,452 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:21:18,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:21:20,144 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3524 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3524) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3526 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3526)))) (exists ((v_ArrVal_3523 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3523)) |c_#memory_int|))) is different from true [2022-11-20 12:21:20,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:21:20,676 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:21:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 297 proven. 43 refuted. 0 times theorem prover too weak. 125 trivial. 3 not checked. [2022-11-20 12:21:20,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:21:21,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:21,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310924931] [2022-11-20 12:21:21,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:21:21,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216097216] [2022-11-20 12:21:21,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216097216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:21,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:21,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-20 12:21:21,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553557170] [2022-11-20 12:21:21,297 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:21:21,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 12:21:21,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 12:21:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1277, Unknown=20, NotChecked=146, Total=1560 [2022-11-20 12:21:21,299 INFO L87 Difference]: Start difference. First operand 589 states and 808 transitions. Second operand has 36 states, 32 states have (on average 3.75) internal successors, (120), 30 states have internal predecessors, (120), 14 states have call successors, (34), 10 states have call predecessors, (34), 13 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2022-11-20 12:21:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:24,500 INFO L93 Difference]: Finished difference Result 902 states and 1293 transitions. [2022-11-20 12:21:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 12:21:24,501 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 3.75) internal successors, (120), 30 states have internal predecessors, (120), 14 states have call successors, (34), 10 states have call predecessors, (34), 13 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) Word has length 239 [2022-11-20 12:21:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:24,505 INFO L225 Difference]: With dead ends: 902 [2022-11-20 12:21:24,505 INFO L226 Difference]: Without dead ends: 602 [2022-11-20 12:21:24,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 229 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=229, Invalid=2600, Unknown=41, NotChecked=210, Total=3080 [2022-11-20 12:21:24,508 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 301 mSDsluCounter, 3501 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 8562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5777 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 3819 Invalid, 8562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2413 Invalid, 0 Unknown, 5777 Unchecked, 2.1s Time] [2022-11-20 12:21:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-20 12:21:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 587. [2022-11-20 12:21:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 371 states have (on average 1.110512129380054) internal successors, (412), 378 states have internal predecessors, (412), 146 states have call successors, (146), 63 states have call predecessors, (146), 69 states have return successors, (241), 145 states have call predecessors, (241), 145 states have call successors, (241) [2022-11-20 12:21:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 799 transitions. [2022-11-20 12:21:24,585 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 799 transitions. Word has length 239 [2022-11-20 12:21:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:24,585 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 799 transitions. [2022-11-20 12:21:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 3.75) internal successors, (120), 30 states have internal predecessors, (120), 14 states have call successors, (34), 10 states have call predecessors, (34), 13 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2022-11-20 12:21:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 799 transitions. [2022-11-20 12:21:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 12:21:24,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:24,588 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:24,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:24,800 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash -889954850, now seen corresponding path program 2 times [2022-11-20 12:21:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:24,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372323503] [2022-11-20 12:21:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:24,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:24,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:21:24,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193598651] [2022-11-20 12:21:24,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:21:24,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:24,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:24,920 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:24,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:21:26,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:21:26,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:26,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-20 12:21:26,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:27,566 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3720 Int) (v_ArrVal_3721 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3721)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3720))))) is different from true [2022-11-20 12:21:36,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 12:21:36,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 12:21:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 281 proven. 8 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-20 12:21:36,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:21:39,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:39,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372323503] [2022-11-20 12:21:39,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:21:39,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193598651] [2022-11-20 12:21:39,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193598651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:39,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:39,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-20 12:21:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404719372] [2022-11-20 12:21:39,177 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:21:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:21:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:21:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=750, Unknown=43, NotChecked=56, Total=930 [2022-11-20 12:21:39,179 INFO L87 Difference]: Start difference. First operand 587 states and 799 transitions. Second operand has 27 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 11 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 11 states have call successors, (31) [2022-11-20 12:21:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:44,551 INFO L93 Difference]: Finished difference Result 1135 states and 1906 transitions. [2022-11-20 12:21:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 12:21:44,552 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 11 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 11 states have call successors, (31) Word has length 233 [2022-11-20 12:21:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:44,558 INFO L225 Difference]: With dead ends: 1135 [2022-11-20 12:21:44,559 INFO L226 Difference]: Without dead ends: 856 [2022-11-20 12:21:44,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 233 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=198, Invalid=1909, Unknown=59, NotChecked=90, Total=2256 [2022-11-20 12:21:44,562 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 359 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 4733 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 5235 SdHoareTripleChecker+Invalid, 8696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 4733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3661 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:44,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 5235 Invalid, 8696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 4733 Invalid, 0 Unknown, 3661 Unchecked, 4.2s Time] [2022-11-20 12:21:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-11-20 12:21:44,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 602. [2022-11-20 12:21:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 380 states have (on average 1.1105263157894736) internal successors, (422), 387 states have internal predecessors, (422), 151 states have call successors, (151), 65 states have call predecessors, (151), 70 states have return successors, (247), 149 states have call predecessors, (247), 150 states have call successors, (247) [2022-11-20 12:21:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 820 transitions. [2022-11-20 12:21:44,659 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 820 transitions. Word has length 233 [2022-11-20 12:21:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:44,659 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 820 transitions. [2022-11-20 12:21:44,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 11 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 9 states have call predecessors, (31), 11 states have call successors, (31) [2022-11-20 12:21:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 820 transitions. [2022-11-20 12:21:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 12:21:44,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:44,663 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:44,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:44,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:44,872 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash 225482014, now seen corresponding path program 3 times [2022-11-20 12:21:44,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:44,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793927888] [2022-11-20 12:21:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:44,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:44,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:21:44,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92763479] [2022-11-20 12:21:44,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:21:44,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:44,964 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:44,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:21:46,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:21:46,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:46,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2124 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-20 12:21:46,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:46,565 INFO L321 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2022-11-20 12:21:46,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59 [2022-11-20 12:23:43,018 WARN L233 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 398 DAG size of output: 145 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 12:23:43,019 INFO L321 Elim1Store]: treesize reduction 1207, result has 22.4 percent of original size [2022-11-20 12:23:43,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 78 case distinctions, treesize of input 410 treesize of output 669 [2022-11-20 12:23:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-20 12:23:44,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:44,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:44,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793927888] [2022-11-20 12:23:44,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:23:44,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92763479] [2022-11-20 12:23:44,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92763479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:44,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:44,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-20 12:23:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195852422] [2022-11-20 12:23:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:23:44,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:23:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=619, Unknown=2, NotChecked=0, Total=702 [2022-11-20 12:23:44,870 INFO L87 Difference]: Start difference. First operand 602 states and 820 transitions. Second operand has 27 states, 23 states have (on average 3.739130434782609) internal successors, (86), 20 states have internal predecessors, (86), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:23:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:48,938 INFO L93 Difference]: Finished difference Result 625 states and 855 transitions. [2022-11-20 12:23:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:23:48,939 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 3.739130434782609) internal successors, (86), 20 states have internal predecessors, (86), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) Word has length 233 [2022-11-20 12:23:48,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:48,943 INFO L225 Difference]: With dead ends: 625 [2022-11-20 12:23:48,943 INFO L226 Difference]: Without dead ends: 623 [2022-11-20 12:23:48,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=111, Invalid=942, Unknown=3, NotChecked=0, Total=1056 [2022-11-20 12:23:48,945 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 118 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3560 SdHoareTripleChecker+Invalid, 4857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2301 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:48,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 3560 Invalid, 4857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2468 Invalid, 0 Unknown, 2301 Unchecked, 2.4s Time] [2022-11-20 12:23:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-11-20 12:23:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 618. [2022-11-20 12:23:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 388 states have (on average 1.1082474226804124) internal successors, (430), 395 states have internal predecessors, (430), 157 states have call successors, (157), 67 states have call predecessors, (157), 72 states have return successors, (260), 155 states have call predecessors, (260), 156 states have call successors, (260) [2022-11-20 12:23:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 847 transitions. [2022-11-20 12:23:49,034 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 847 transitions. Word has length 233 [2022-11-20 12:23:49,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:49,034 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 847 transitions. [2022-11-20 12:23:49,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 3.739130434782609) internal successors, (86), 20 states have internal predecessors, (86), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:23:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 847 transitions. [2022-11-20 12:23:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 12:23:49,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:49,038 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:49,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:49,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:49,249 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:49,250 INFO L85 PathProgramCache]: Analyzing trace with hash 563474800, now seen corresponding path program 1 times [2022-11-20 12:23:49,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:49,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118694126] [2022-11-20 12:23:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:49,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:49,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:23:49,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484282741] [2022-11-20 12:23:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:49,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:49,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:49,322 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:49,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 12:23:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:50,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-20 12:23:50,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:51,029 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4095 Int) (v_ArrVal_4094 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4095)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4094))))) is different from true [2022-11-20 12:23:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:59,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:59,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-20 12:23:59,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:59,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:59,542 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 12:23:59,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 12:23:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-20 12:23:59,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:01,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:01,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118694126] [2022-11-20 12:24:01,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:01,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484282741] [2022-11-20 12:24:01,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484282741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:01,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:24:01,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-20 12:24:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435735073] [2022-11-20 12:24:01,905 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:01,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:24:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:24:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=343, Unknown=24, NotChecked=38, Total=462 [2022-11-20 12:24:01,908 INFO L87 Difference]: Start difference. First operand 618 states and 847 transitions. Second operand has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 9 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-11-20 12:24:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:04,979 INFO L93 Difference]: Finished difference Result 1082 states and 1686 transitions. [2022-11-20 12:24:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:24:04,980 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 9 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 239 [2022-11-20 12:24:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:04,986 INFO L225 Difference]: With dead ends: 1082 [2022-11-20 12:24:04,986 INFO L226 Difference]: Without dead ends: 787 [2022-11-20 12:24:04,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 253 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=108, Invalid=683, Unknown=25, NotChecked=54, Total=870 [2022-11-20 12:24:04,990 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 249 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 4632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1618 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:04,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 3409 Invalid, 4632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2911 Invalid, 0 Unknown, 1618 Unchecked, 2.7s Time] [2022-11-20 12:24:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-20 12:24:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 633. [2022-11-20 12:24:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 397 states have (on average 1.1083123425692696) internal successors, (440), 404 states have internal predecessors, (440), 162 states have call successors, (162), 69 states have call predecessors, (162), 73 states have return successors, (266), 159 states have call predecessors, (266), 161 states have call successors, (266) [2022-11-20 12:24:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 868 transitions. [2022-11-20 12:24:05,101 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 868 transitions. Word has length 239 [2022-11-20 12:24:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:05,103 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 868 transitions. [2022-11-20 12:24:05,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 9 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-11-20 12:24:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 868 transitions. [2022-11-20 12:24:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:24:05,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:05,107 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:05,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:05,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:24:05,319 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1840257374, now seen corresponding path program 2 times [2022-11-20 12:24:05,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:05,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086626415] [2022-11-20 12:24:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:05,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:05,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160220175] [2022-11-20 12:24:05,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:24:05,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:05,415 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:05,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 12:24:06,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:24:06,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:24:06,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 12:24:06,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 12:24:06,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:06,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086626415] [2022-11-20 12:24:06,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:06,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160220175] [2022-11-20 12:24:06,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160220175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:06,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:06,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:24:06,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434947621] [2022-11-20 12:24:06,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:06,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:24:06,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:06,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:24:06,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:24:06,453 INFO L87 Difference]: Start difference. First operand 633 states and 868 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:24:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:06,979 INFO L93 Difference]: Finished difference Result 1032 states and 1475 transitions. [2022-11-20 12:24:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:24:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) Word has length 241 [2022-11-20 12:24:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:06,984 INFO L225 Difference]: With dead ends: 1032 [2022-11-20 12:24:06,984 INFO L226 Difference]: Without dead ends: 573 [2022-11-20 12:24:06,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:24:06,987 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 9 mSDsluCounter, 3966 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:06,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4376 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:24:06,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-20 12:24:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 570. [2022-11-20 12:24:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 353 states have (on average 1.1161473087818696) internal successors, (394), 358 states have internal predecessors, (394), 152 states have call successors, (152), 62 states have call predecessors, (152), 64 states have return successors, (247), 149 states have call predecessors, (247), 151 states have call successors, (247) [2022-11-20 12:24:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 793 transitions. [2022-11-20 12:24:07,062 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 793 transitions. Word has length 241 [2022-11-20 12:24:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:07,062 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 793 transitions. [2022-11-20 12:24:07,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:24:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 793 transitions. [2022-11-20 12:24:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 12:24:07,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:07,066 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:07,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:07,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:24:07,277 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:07,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash -495908807, now seen corresponding path program 1 times [2022-11-20 12:24:07,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:07,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767381012] [2022-11-20 12:24:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:07,348 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:07,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247766605] [2022-11-20 12:24:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:07,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:07,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:07,350 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:07,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:24:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:08,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 12:24:08,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:08,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:24:08,572 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4447 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4447)) |c_#memory_int|)) is different from true [2022-11-20 12:24:08,657 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4447 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4447)))) (let ((.cse0 (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) (or (and (not .cse0) (not |c_aws_array_list_is_valid_#t~short132|)) (and .cse0 |c_aws_array_list_is_valid_#t~short132|)))) is different from true [2022-11-20 12:24:08,666 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4447 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4447)))) (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) is different from true [2022-11-20 12:24:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2022-11-20 12:24:08,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:08,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:08,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767381012] [2022-11-20 12:24:08,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247766605] [2022-11-20 12:24:08,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247766605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:08,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:08,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 12:24:08,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120561507] [2022-11-20 12:24:08,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:08,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:24:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:08,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:24:08,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=125, Unknown=3, NotChecked=72, Total=240 [2022-11-20 12:24:08,703 INFO L87 Difference]: Start difference. First operand 570 states and 793 transitions. Second operand has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 6 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:24:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:09,967 INFO L93 Difference]: Finished difference Result 976 states and 1429 transitions. [2022-11-20 12:24:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:24:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 6 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 233 [2022-11-20 12:24:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:09,971 INFO L225 Difference]: With dead ends: 976 [2022-11-20 12:24:09,971 INFO L226 Difference]: Without dead ends: 579 [2022-11-20 12:24:09,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=194, Unknown=3, NotChecked=90, Total=342 [2022-11-20 12:24:09,974 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 114 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1815 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:09,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1144 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1009 Invalid, 0 Unknown, 1815 Unchecked, 1.1s Time] [2022-11-20 12:24:09,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-20 12:24:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 571. [2022-11-20 12:24:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 354 states have (on average 1.115819209039548) internal successors, (395), 359 states have internal predecessors, (395), 152 states have call successors, (152), 62 states have call predecessors, (152), 64 states have return successors, (247), 149 states have call predecessors, (247), 151 states have call successors, (247) [2022-11-20 12:24:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 794 transitions. [2022-11-20 12:24:10,060 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 794 transitions. Word has length 233 [2022-11-20 12:24:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:10,060 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 794 transitions. [2022-11-20 12:24:10,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 6 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:24:10,061 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 794 transitions. [2022-11-20 12:24:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:24:10,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:10,063 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:10,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:10,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:24:10,276 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash -722546902, now seen corresponding path program 3 times [2022-11-20 12:24:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273295226] [2022-11-20 12:24:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:10,356 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:10,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851335060] [2022-11-20 12:24:10,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:24:10,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:10,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:10,358 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:10,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 12:24:11,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:24:11,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:24:11,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 12:24:11,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 135 proven. 6 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:24:11,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273295226] [2022-11-20 12:24:12,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851335060] [2022-11-20 12:24:12,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851335060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:12,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:24:12,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-20 12:24:12,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627039657] [2022-11-20 12:24:12,153 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:12,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:24:12,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:12,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:24:12,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:24:12,155 INFO L87 Difference]: Start difference. First operand 571 states and 794 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-20 12:24:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:14,378 INFO L93 Difference]: Finished difference Result 877 states and 1300 transitions. [2022-11-20 12:24:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:24:14,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 241 [2022-11-20 12:24:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:14,381 INFO L225 Difference]: With dead ends: 877 [2022-11-20 12:24:14,382 INFO L226 Difference]: Without dead ends: 589 [2022-11-20 12:24:14,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:24:14,384 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 131 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:14,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1207 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1657 Invalid, 0 Unknown, 254 Unchecked, 1.9s Time] [2022-11-20 12:24:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-20 12:24:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 585. [2022-11-20 12:24:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 362 states have (on average 1.1132596685082874) internal successors, (403), 368 states have internal predecessors, (403), 156 states have call successors, (156), 63 states have call predecessors, (156), 66 states have return successors, (279), 153 states have call predecessors, (279), 155 states have call successors, (279) [2022-11-20 12:24:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 838 transitions. [2022-11-20 12:24:14,473 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 838 transitions. Word has length 241 [2022-11-20 12:24:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:14,474 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 838 transitions. [2022-11-20 12:24:14,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-20 12:24:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 838 transitions. [2022-11-20 12:24:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 12:24:14,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:14,477 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:14,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:14,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 12:24:14,687 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1986777704, now seen corresponding path program 3 times [2022-11-20 12:24:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:14,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765766079] [2022-11-20 12:24:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:14,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:14,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821660904] [2022-11-20 12:24:14,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:24:14,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:14,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:14,757 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:14,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 12:24:16,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:24:16,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:24:16,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-20 12:24:16,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:17,116 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (exists ((v_ArrVal_4805 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_4805)))) (exists ((v_ArrVal_4803 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_4803)))) (exists ((v_ArrVal_4804 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_4804)) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-20 12:24:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 136 proven. 5 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:24:32,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:35,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:35,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765766079] [2022-11-20 12:24:35,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:35,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821660904] [2022-11-20 12:24:35,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821660904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:35,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:24:35,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-20 12:24:35,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898530773] [2022-11-20 12:24:35,807 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:35,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:24:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:24:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=811, Unknown=12, NotChecked=58, Total=992 [2022-11-20 12:24:35,809 INFO L87 Difference]: Start difference. First operand 585 states and 838 transitions. Second operand has 22 states, 21 states have (on average 4.190476190476191) internal successors, (88), 19 states have internal predecessors, (88), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:24:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:58,537 INFO L93 Difference]: Finished difference Result 895 states and 1343 transitions. [2022-11-20 12:24:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 12:24:58,538 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.190476190476191) internal successors, (88), 19 states have internal predecessors, (88), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) Word has length 235 [2022-11-20 12:24:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:58,547 INFO L225 Difference]: With dead ends: 895 [2022-11-20 12:24:58,548 INFO L226 Difference]: Without dead ends: 596 [2022-11-20 12:24:58,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=226, Invalid=1478, Unknown=22, NotChecked=80, Total=1806 [2022-11-20 12:24:58,556 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 131 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 5328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2360 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:58,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 2576 Invalid, 5328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2880 Invalid, 0 Unknown, 2360 Unchecked, 3.6s Time] [2022-11-20 12:24:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-11-20 12:24:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 585. [2022-11-20 12:24:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 362 states have (on average 1.1132596685082874) internal successors, (403), 368 states have internal predecessors, (403), 156 states have call successors, (156), 63 states have call predecessors, (156), 66 states have return successors, (277), 153 states have call predecessors, (277), 155 states have call successors, (277) [2022-11-20 12:24:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 836 transitions. [2022-11-20 12:24:58,650 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 836 transitions. Word has length 235 [2022-11-20 12:24:58,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:58,651 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 836 transitions. [2022-11-20 12:24:58,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.190476190476191) internal successors, (88), 19 states have internal predecessors, (88), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:24:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 836 transitions. [2022-11-20 12:24:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:24:58,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:58,654 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:58,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:58,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:58,866 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:58,866 INFO L85 PathProgramCache]: Analyzing trace with hash 903194218, now seen corresponding path program 4 times [2022-11-20 12:24:58,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:58,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921584731] [2022-11-20 12:24:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:58,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:58,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:58,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109485526] [2022-11-20 12:24:58,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:24:58,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:58,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:58,945 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:58,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 12:24:59,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:24:59,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:25:00,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-20 12:25:00,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:00,342 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5007 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5007) |c_#memory_int|)) is different from true [2022-11-20 12:25:00,496 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5007 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5007) |c_#memory_int|))) is different from true [2022-11-20 12:25:00,532 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-20 12:25:00,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2022-11-20 12:25:13,144 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5008 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5008) |c_#memory_int|)) is different from true [2022-11-20 12:25:21,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:21,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-20 12:25:21,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-20 12:25:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 253 proven. 68 refuted. 4 times theorem prover too weak. 129 trivial. 20 not checked. [2022-11-20 12:25:34,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:35,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921584731] [2022-11-20 12:25:35,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:25:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109485526] [2022-11-20 12:25:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109485526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:35,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:25:35,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-20 12:25:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610261193] [2022-11-20 12:25:35,132 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:25:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:25:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=994, Unknown=30, NotChecked=198, Total=1332 [2022-11-20 12:25:35,133 INFO L87 Difference]: Start difference. First operand 585 states and 836 transitions. Second operand has 31 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 13 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (33), 12 states have call predecessors, (33), 12 states have call successors, (33) [2022-11-20 12:25:35,516 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5007 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5007) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5008 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5008) |c_#memory_int|))) is different from true [2022-11-20 12:25:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:44,354 INFO L93 Difference]: Finished difference Result 1056 states and 1709 transitions. [2022-11-20 12:25:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 12:25:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 13 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (33), 12 states have call predecessors, (33), 12 states have call successors, (33) Word has length 241 [2022-11-20 12:25:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:44,360 INFO L225 Difference]: With dead ends: 1056 [2022-11-20 12:25:44,360 INFO L226 Difference]: Without dead ends: 757 [2022-11-20 12:25:44,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 218 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=333, Invalid=2373, Unknown=66, NotChecked=420, Total=3192 [2022-11-20 12:25:44,363 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 317 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 7783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4136 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:44,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 3651 Invalid, 7783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3371 Invalid, 0 Unknown, 4136 Unchecked, 3.7s Time] [2022-11-20 12:25:44,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-20 12:25:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 624. [2022-11-20 12:25:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 386 states have (on average 1.1088082901554404) internal successors, (428), 393 states have internal predecessors, (428), 166 states have call successors, (166), 68 states have call predecessors, (166), 71 states have return successors, (315), 162 states have call predecessors, (315), 165 states have call successors, (315) [2022-11-20 12:25:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 909 transitions. [2022-11-20 12:25:44,470 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 909 transitions. Word has length 241 [2022-11-20 12:25:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:44,471 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 909 transitions. [2022-11-20 12:25:44,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 13 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (33), 12 states have call predecessors, (33), 12 states have call successors, (33) [2022-11-20 12:25:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 909 transitions. [2022-11-20 12:25:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 12:25:44,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:44,474 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:44,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:44,686 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1693584792, now seen corresponding path program 4 times [2022-11-20 12:25:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:44,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761320995] [2022-11-20 12:25:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:44,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:25:44,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197443034] [2022-11-20 12:25:44,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:25:44,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:44,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:44,763 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:44,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 12:25:45,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:25:45,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:25:45,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-20 12:25:45,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:46,156 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5194 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5194)) |c_#memory_int|)) is different from true [2022-11-20 12:25:46,325 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_5194 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5194))))) is different from true [2022-11-20 12:25:46,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:46,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:46,353 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 12:25:46,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-11-20 12:25:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 4 not checked. [2022-11-20 12:25:46,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:46,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:46,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761320995] [2022-11-20 12:25:46,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:25:46,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197443034] [2022-11-20 12:25:46,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197443034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:46,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:25:46,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-20 12:25:46,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836359029] [2022-11-20 12:25:46,669 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:25:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:25:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=8, NotChecked=58, Total=306 [2022-11-20 12:25:46,671 INFO L87 Difference]: Start difference. First operand 624 states and 909 transitions. Second operand has 17 states, 15 states have (on average 7.333333333333333) internal successors, (110), 16 states have internal predecessors, (110), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-20 12:25:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:49,418 INFO L93 Difference]: Finished difference Result 1084 states and 1768 transitions. [2022-11-20 12:25:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:25:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 7.333333333333333) internal successors, (110), 16 states have internal predecessors, (110), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) Word has length 235 [2022-11-20 12:25:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:49,425 INFO L225 Difference]: With dead ends: 1084 [2022-11-20 12:25:49,425 INFO L226 Difference]: Without dead ends: 750 [2022-11-20 12:25:49,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 296 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=8, NotChecked=82, Total=552 [2022-11-20 12:25:49,428 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 221 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 5374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2915 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:49,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 2532 Invalid, 5374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2327 Invalid, 0 Unknown, 2915 Unchecked, 2.4s Time] [2022-11-20 12:25:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-20 12:25:49,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 593. [2022-11-20 12:25:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 366 states have (on average 1.1120218579234973) internal successors, (407), 373 states have internal predecessors, (407), 159 states have call successors, (159), 63 states have call predecessors, (159), 67 states have return successors, (280), 156 states have call predecessors, (280), 158 states have call successors, (280) [2022-11-20 12:25:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 846 transitions. [2022-11-20 12:25:49,522 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 846 transitions. Word has length 235 [2022-11-20 12:25:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:49,522 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 846 transitions. [2022-11-20 12:25:49,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 7.333333333333333) internal successors, (110), 16 states have internal predecessors, (110), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-20 12:25:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 846 transitions. [2022-11-20 12:25:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 12:25:49,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:49,525 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:49,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-20 12:25:49,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:49,738 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1357648373, now seen corresponding path program 1 times [2022-11-20 12:25:49,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:49,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554715073] [2022-11-20 12:25:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:49,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:49,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:49,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554715073] [2022-11-20 12:25:49,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 12:25:49,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789986755] [2022-11-20 12:25:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:49,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:49,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:49,920 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:49,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-20 12:25:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:50,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:25:50,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-11-20 12:25:50,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:25:50,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789986755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:50,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:50,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:25:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310714043] [2022-11-20 12:25:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:25:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:25:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:25:50,885 INFO L87 Difference]: Start difference. First operand 593 states and 846 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:25:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:50,957 INFO L93 Difference]: Finished difference Result 1025 states and 1515 transitions. [2022-11-20 12:25:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:25:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 235 [2022-11-20 12:25:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:50,960 INFO L225 Difference]: With dead ends: 1025 [2022-11-20 12:25:50,960 INFO L226 Difference]: Without dead ends: 583 [2022-11-20 12:25:50,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:25:50,962 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 0 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:50,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 794 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:25:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-20 12:25:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 582. [2022-11-20 12:25:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 360 states have (on average 1.1111111111111112) internal successors, (400), 366 states have internal predecessors, (400), 156 states have call successors, (156), 62 states have call predecessors, (156), 65 states have return successors, (276), 153 states have call predecessors, (276), 155 states have call successors, (276) [2022-11-20 12:25:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 832 transitions. [2022-11-20 12:25:51,053 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 832 transitions. Word has length 235 [2022-11-20 12:25:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:51,053 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 832 transitions. [2022-11-20 12:25:51,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 12:25:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 832 transitions. [2022-11-20 12:25:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 12:25:51,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:51,057 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:51,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:51,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:51,268 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:25:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash -113412904, now seen corresponding path program 4 times [2022-11-20 12:25:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:51,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332855840] [2022-11-20 12:25:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:51,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:51,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:25:51,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671537858] [2022-11-20 12:25:51,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:25:51,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:51,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:51,338 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:51,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-20 12:25:52,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:25:52,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:25:52,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-20 12:25:52,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:53,023 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5568 Int) (v_ArrVal_5567 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5567)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5568))))) is different from true [2022-11-20 12:26:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 138 proven. 3 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:26:01,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:04,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:04,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332855840] [2022-11-20 12:26:04,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:26:04,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671537858] [2022-11-20 12:26:04,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671537858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:04,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:26:04,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-20 12:26:04,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409339350] [2022-11-20 12:26:04,294 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:04,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:26:04,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:26:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=345, Unknown=24, NotChecked=38, Total=462 [2022-11-20 12:26:04,295 INFO L87 Difference]: Start difference. First operand 582 states and 832 transitions. Second operand has 21 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 9 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-20 12:26:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:07,947 INFO L93 Difference]: Finished difference Result 1085 states and 1854 transitions. [2022-11-20 12:26:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:26:07,948 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 9 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) Word has length 235 [2022-11-20 12:26:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:07,953 INFO L225 Difference]: With dead ends: 1085 [2022-11-20 12:26:07,953 INFO L226 Difference]: Without dead ends: 784 [2022-11-20 12:26:07,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=95, Invalid=641, Unknown=24, NotChecked=52, Total=812 [2022-11-20 12:26:07,956 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 272 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 5632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2092 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:07,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 3668 Invalid, 5632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 3293 Invalid, 0 Unknown, 2092 Unchecked, 3.2s Time] [2022-11-20 12:26:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-20 12:26:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 591. [2022-11-20 12:26:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 367 states have (on average 1.108991825613079) internal successors, (407), 373 states have internal predecessors, (407), 156 states have call successors, (156), 64 states have call predecessors, (156), 67 states have return successors, (295), 153 states have call predecessors, (295), 155 states have call successors, (295) [2022-11-20 12:26:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 858 transitions. [2022-11-20 12:26:08,066 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 858 transitions. Word has length 235 [2022-11-20 12:26:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:08,067 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 858 transitions. [2022-11-20 12:26:08,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 9 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-20 12:26:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 858 transitions. [2022-11-20 12:26:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-20 12:26:08,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:08,070 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:08,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 12:26:08,283 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -526165473, now seen corresponding path program 1 times [2022-11-20 12:26:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:08,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160557951] [2022-11-20 12:26:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:08,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:26:08,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340029345] [2022-11-20 12:26:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:08,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:08,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:08,370 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:08,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-20 12:26:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:09,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 3094 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-20 12:26:09,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:09,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:26:09,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:26:09,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:26:09,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:26:09,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:26:09,838 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:26:09,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:26:09,982 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5790 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5790))) is different from true [2022-11-20 12:26:10,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:10,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:26:10,081 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:26:10,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:26:10,470 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:26:10,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:26:10,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:26:10,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:10,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-20 12:26:18,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:18,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-20 12:26:19,012 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5797 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5797)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 12:26:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 306 proven. 54 refuted. 3 times theorem prover too weak. 144 trivial. 3 not checked. [2022-11-20 12:26:19,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:19,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:19,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160557951] [2022-11-20 12:26:19,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:26:19,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340029345] [2022-11-20 12:26:19,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340029345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:19,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:26:19,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-20 12:26:19,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492281977] [2022-11-20 12:26:19,767 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:19,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:26:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:26:19,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=940, Unknown=18, NotChecked=126, Total=1190 [2022-11-20 12:26:19,768 INFO L87 Difference]: Start difference. First operand 591 states and 858 transitions. Second operand has 34 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 29 states have internal predecessors, (113), 14 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (33), 13 states have call predecessors, (33), 14 states have call successors, (33) [2022-11-20 12:26:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:24,424 INFO L93 Difference]: Finished difference Result 979 states and 1493 transitions. [2022-11-20 12:26:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:26:24,424 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 29 states have internal predecessors, (113), 14 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (33), 13 states have call predecessors, (33), 14 states have call successors, (33) Word has length 242 [2022-11-20 12:26:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:24,427 INFO L225 Difference]: With dead ends: 979 [2022-11-20 12:26:24,427 INFO L226 Difference]: Without dead ends: 611 [2022-11-20 12:26:24,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 309 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=245, Invalid=2178, Unknown=35, NotChecked=194, Total=2652 [2022-11-20 12:26:24,429 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 355 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3231 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:24,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2632 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 1865 Invalid, 0 Unknown, 3231 Unchecked, 1.8s Time] [2022-11-20 12:26:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-20 12:26:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 595. [2022-11-20 12:26:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 370 states have (on average 1.1081081081081081) internal successors, (410), 376 states have internal predecessors, (410), 156 states have call successors, (156), 65 states have call predecessors, (156), 68 states have return successors, (294), 153 states have call predecessors, (294), 155 states have call successors, (294) [2022-11-20 12:26:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 860 transitions. [2022-11-20 12:26:24,528 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 860 transitions. Word has length 242 [2022-11-20 12:26:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:24,528 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 860 transitions. [2022-11-20 12:26:24,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 29 states have internal predecessors, (113), 14 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (33), 13 states have call predecessors, (33), 14 states have call successors, (33) [2022-11-20 12:26:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 860 transitions. [2022-11-20 12:26:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-20 12:26:24,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:24,531 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:24,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:24,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 12:26:24,744 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash 500538980, now seen corresponding path program 1 times [2022-11-20 12:26:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:24,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951866865] [2022-11-20 12:26:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:24,816 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:26:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139170998] [2022-11-20 12:26:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:24,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:24,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:24,818 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:24,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-20 12:26:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:25,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 154 conjunts are in the unsatisfiable core [2022-11-20 12:26:25,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:26,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:26:26,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:26:26,427 WARN L859 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_5978 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5978)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:26:26,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:26,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-20 12:26:51,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-20 12:26:51,687 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5980 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5980) |c_#memory_int|)) is different from true [2022-11-20 12:26:51,789 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5980 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5980) |c_#memory_int|)) (let ((.cse0 (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) (or (and (not .cse0) (not |c_aws_array_list_is_valid_#t~short132|)) (and .cse0 |c_aws_array_list_is_valid_#t~short132|)))) is different from true [2022-11-20 12:26:51,886 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:26:51,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-20 12:26:51,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-20 12:26:52,236 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5981 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5981) |c_#memory_int|)) is different from true [2022-11-20 12:26:52,368 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:26:52,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 12:26:53,083 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5982 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5982)) |c_#memory_int|)) is different from true [2022-11-20 12:26:53,195 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) (or (and .cse0 |c_aws_array_list_is_valid_#t~short129|) (and (not .cse0) (not |c_aws_array_list_is_valid_#t~short129|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5982 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5982)) |c_#memory_int|))) is different from true [2022-11-20 12:26:53,205 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5982 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5982)) |c_#memory_int|))) is different from true [2022-11-20 12:26:53,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:53,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:26:53,253 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 12:26:53,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 1 [2022-11-20 12:26:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 171 proven. 169 refuted. 0 times theorem prover too weak. 98 trivial. 44 not checked. [2022-11-20 12:26:53,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:53,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951866865] [2022-11-20 12:26:53,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:26:53,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139170998] [2022-11-20 12:26:53,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139170998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:53,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:26:53,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-11-20 12:26:53,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825187335] [2022-11-20 12:26:53,549 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:53,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 12:26:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 12:26:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1044, Unknown=48, NotChecked=504, Total=1722 [2022-11-20 12:26:53,551 INFO L87 Difference]: Start difference. First operand 595 states and 860 transitions. Second operand has 41 states, 38 states have (on average 3.3947368421052633) internal successors, (129), 36 states have internal predecessors, (129), 17 states have call successors, (36), 9 states have call predecessors, (36), 15 states have return successors, (35), 17 states have call predecessors, (35), 17 states have call successors, (35) [2022-11-20 12:26:54,313 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5982 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5982)) |c_#memory_int|)) (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_5981 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5981) |c_#memory_int|)) (exists ((v_ArrVal_5980 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5980) |c_#memory_int|)) (exists ((v_ArrVal_5978 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5978)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:27:07,254 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5982 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5982)) |c_#memory_int|)) (exists ((v_ArrVal_5981 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5981) |c_#memory_int|)) (exists ((v_ArrVal_5980 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5980) |c_#memory_int|))) is different from true [2022-11-20 12:27:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:09,105 INFO L93 Difference]: Finished difference Result 918 states and 1398 transitions. [2022-11-20 12:27:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 12:27:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 3.3947368421052633) internal successors, (129), 36 states have internal predecessors, (129), 17 states have call successors, (36), 9 states have call predecessors, (36), 15 states have return successors, (35), 17 states have call predecessors, (35), 17 states have call successors, (35) Word has length 243 [2022-11-20 12:27:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:09,110 INFO L225 Difference]: With dead ends: 918 [2022-11-20 12:27:09,110 INFO L226 Difference]: Without dead ends: 613 [2022-11-20 12:27:09,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 225 SyntacticMatches, 22 SemanticMatches, 65 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=288, Invalid=2986, Unknown=68, NotChecked=1080, Total=4422 [2022-11-20 12:27:09,114 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 173 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 8863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6301 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:09,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 3358 Invalid, 8863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2449 Invalid, 0 Unknown, 6301 Unchecked, 2.1s Time] [2022-11-20 12:27:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-20 12:27:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 610. [2022-11-20 12:27:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 379 states have (on average 1.108179419525066) internal successors, (420), 385 states have internal predecessors, (420), 161 states have call successors, (161), 67 states have call predecessors, (161), 69 states have return successors, (299), 157 states have call predecessors, (299), 160 states have call successors, (299) [2022-11-20 12:27:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 880 transitions. [2022-11-20 12:27:09,187 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 880 transitions. Word has length 243 [2022-11-20 12:27:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:09,187 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 880 transitions. [2022-11-20 12:27:09,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 3.3947368421052633) internal successors, (129), 36 states have internal predecessors, (129), 17 states have call successors, (36), 9 states have call predecessors, (36), 15 states have return successors, (35), 17 states have call predecessors, (35), 17 states have call successors, (35) [2022-11-20 12:27:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 880 transitions. [2022-11-20 12:27:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 12:27:09,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:09,190 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:09,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:09,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 12:27:09,403 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1768846465, now seen corresponding path program 1 times [2022-11-20 12:27:09,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:09,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392381289] [2022-11-20 12:27:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:09,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:09,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:27:09,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857642556] [2022-11-20 12:27:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:09,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:09,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:09,489 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:09,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-20 12:27:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:10,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 3110 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-20 12:27:10,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:10,994 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:27:10,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-20 12:27:11,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-20 12:27:11,057 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:27:11,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2022-11-20 12:27:11,115 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6209 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6209) |c_#memory_int|)) is different from true [2022-11-20 12:27:15,304 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6209 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6209) |c_#memory_int|))) is different from true [2022-11-20 12:27:15,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:27:15,519 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6210 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6210) |c_#memory_int|)) is different from true [2022-11-20 12:27:17,661 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:27:17,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 12:27:18,023 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6211 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6211) |c_#memory_int|)) is different from true [2022-11-20 12:27:24,315 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-20 12:27:24,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-20 12:27:24,584 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6213 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6213)) |c_#memory_int|)) is different from true [2022-11-20 12:27:28,883 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6213 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6213))))) is different from true [2022-11-20 12:27:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 184 proven. 72 refuted. 0 times theorem prover too weak. 224 trivial. 50 not checked. [2022-11-20 12:27:28,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:27:31,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:31,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392381289] [2022-11-20 12:27:31,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:27:31,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857642556] [2022-11-20 12:27:31,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857642556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:31,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:27:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-11-20 12:27:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110169574] [2022-11-20 12:27:31,190 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:27:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 12:27:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 12:27:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=496, Unknown=46, NotChecked=306, Total=930 [2022-11-20 12:27:31,192 INFO L87 Difference]: Start difference. First operand 610 states and 880 transitions. Second operand has 30 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 14 states have call successors, (34), 6 states have call predecessors, (34), 11 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) [2022-11-20 12:27:31,557 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6213 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6213)) |c_#memory_int|)) (exists ((v_ArrVal_6211 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6211) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6209 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6209) |c_#memory_int|)) (exists ((v_ArrVal_6210 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6210) |c_#memory_int|))) is different from true [2022-11-20 12:27:33,675 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6213 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6213)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6209 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6209) |c_#memory_int|))) is different from true [2022-11-20 12:27:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:36,007 INFO L93 Difference]: Finished difference Result 936 states and 1415 transitions. [2022-11-20 12:27:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:27:36,007 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 14 states have call successors, (34), 6 states have call predecessors, (34), 11 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) Word has length 244 [2022-11-20 12:27:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:36,012 INFO L225 Difference]: With dead ends: 936 [2022-11-20 12:27:36,012 INFO L226 Difference]: Without dead ends: 631 [2022-11-20 12:27:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 202 SyntacticMatches, 21 SemanticMatches, 40 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=143, Invalid=955, Unknown=56, NotChecked=568, Total=1722 [2022-11-20 12:27:36,015 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 140 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 7092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4487 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:36,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 2738 Invalid, 7092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2509 Invalid, 0 Unknown, 4487 Unchecked, 2.3s Time] [2022-11-20 12:27:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-11-20 12:27:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2022-11-20 12:27:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 389 states have (on average 1.1053984575835476) internal successors, (430), 395 states have internal predecessors, (430), 163 states have call successors, (163), 70 states have call predecessors, (163), 72 states have return successors, (302), 159 states have call predecessors, (302), 162 states have call successors, (302) [2022-11-20 12:27:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 895 transitions. [2022-11-20 12:27:36,086 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 895 transitions. Word has length 244 [2022-11-20 12:27:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:36,087 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 895 transitions. [2022-11-20 12:27:36,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 14 states have call successors, (34), 6 states have call predecessors, (34), 11 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) [2022-11-20 12:27:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 895 transitions. [2022-11-20 12:27:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:27:36,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:36,112 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:36,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:36,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 12:27:36,313 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1241421486, now seen corresponding path program 1 times [2022-11-20 12:27:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:36,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491990999] [2022-11-20 12:27:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:36,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:36,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:27:36,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431727706] [2022-11-20 12:27:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:36,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:36,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:36,410 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-20 12:27:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:37,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-20 12:27:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:37,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:27:39,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-20 12:27:39,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:27:39,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 12:27:40,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-20 12:27:40,125 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:27:40,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:27:42,329 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6411 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6411) |c_#memory_int|)) is different from true [2022-11-20 12:27:48,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:48,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-20 12:27:48,717 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:27:48,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:27:58,603 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6413 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6413)) |c_#memory_int|)) is different from true [2022-11-20 12:27:58,614 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6413 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6413)) |c_#memory_int|)) is different from true [2022-11-20 12:27:58,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:58,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:58,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:58,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 12:28:05,193 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6415 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6415)))) is different from true [2022-11-20 12:28:05,204 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6415 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6415)) |c_#memory_int|)) is different from true [2022-11-20 12:28:05,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:28:05,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2022-11-20 12:28:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 206 proven. 49 refuted. 37 times theorem prover too weak. 154 trivial. 36 not checked. [2022-11-20 12:28:11,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:13,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491990999] [2022-11-20 12:28:13,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:28:13,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431727706] [2022-11-20 12:28:13,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431727706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:13,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:28:13,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-20 12:28:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045719809] [2022-11-20 12:28:13,363 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:28:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:28:13,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=755, Unknown=33, NotChecked=300, Total=1190 [2022-11-20 12:28:13,365 INFO L87 Difference]: Start difference. First operand 625 states and 895 transitions. Second operand has 34 states, 30 states have (on average 4.0) internal successors, (120), 30 states have internal predecessors, (120), 13 states have call successors, (33), 10 states have call predecessors, (33), 13 states have return successors, (32), 13 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-20 12:28:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:32,550 INFO L93 Difference]: Finished difference Result 1090 states and 1584 transitions. [2022-11-20 12:28:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 12:28:32,551 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 4.0) internal successors, (120), 30 states have internal predecessors, (120), 13 states have call successors, (33), 10 states have call predecessors, (33), 13 states have return successors, (32), 13 states have call predecessors, (32), 13 states have call successors, (32) Word has length 237 [2022-11-20 12:28:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:32,556 INFO L225 Difference]: With dead ends: 1090 [2022-11-20 12:28:32,556 INFO L226 Difference]: Without dead ends: 769 [2022-11-20 12:28:32,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 189 SyntacticMatches, 20 SemanticMatches, 47 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=191, Invalid=1648, Unknown=73, NotChecked=440, Total=2352 [2022-11-20 12:28:32,558 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 145 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 7005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4528 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:32,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2621 Invalid, 7005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2364 Invalid, 0 Unknown, 4528 Unchecked, 2.1s Time] [2022-11-20 12:28:32,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-20 12:28:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 763. [2022-11-20 12:28:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 477 states have (on average 1.0880503144654088) internal successors, (519), 484 states have internal predecessors, (519), 191 states have call successors, (191), 91 states have call predecessors, (191), 94 states have return successors, (334), 187 states have call predecessors, (334), 190 states have call successors, (334) [2022-11-20 12:28:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1044 transitions. [2022-11-20 12:28:32,686 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1044 transitions. Word has length 237 [2022-11-20 12:28:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:32,687 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1044 transitions. [2022-11-20 12:28:32,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 4.0) internal successors, (120), 30 states have internal predecessors, (120), 13 states have call successors, (33), 10 states have call predecessors, (33), 13 states have return successors, (32), 13 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-20 12:28:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1044 transitions. [2022-11-20 12:28:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 12:28:32,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:32,690 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:32,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:32,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:32,903 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:32,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:32,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1033230704, now seen corresponding path program 1 times [2022-11-20 12:28:32,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:32,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600338944] [2022-11-20 12:28:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:32,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:32,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:28:32,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131313269] [2022-11-20 12:28:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:32,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:32,983 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:33,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-20 12:28:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:34,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 3097 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 12:28:34,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:34,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:28:34,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 12:28:34,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:28:34,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:28:34,612 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:28:34,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:28:34,855 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6648 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6648))) is different from true [2022-11-20 12:28:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-11-20 12:28:35,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:35,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600338944] [2022-11-20 12:28:35,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:28:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131313269] [2022-11-20 12:28:35,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131313269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:35,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:28:35,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-20 12:28:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738219993] [2022-11-20 12:28:35,534 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:35,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:28:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:28:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=424, Unknown=8, NotChecked=42, Total=552 [2022-11-20 12:28:35,535 INFO L87 Difference]: Start difference. First operand 763 states and 1044 transitions. Second operand has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 19 states have internal predecessors, (91), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-20 12:28:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:37,541 INFO L93 Difference]: Finished difference Result 1213 states and 1749 transitions. [2022-11-20 12:28:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:28:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 19 states have internal predecessors, (91), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 239 [2022-11-20 12:28:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:37,545 INFO L225 Difference]: With dead ends: 1213 [2022-11-20 12:28:37,545 INFO L226 Difference]: Without dead ends: 778 [2022-11-20 12:28:37,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 396 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=640, Unknown=8, NotChecked=52, Total=812 [2022-11-20 12:28:37,547 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 121 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 3689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2160 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:37,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2023 Invalid, 3689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1421 Invalid, 0 Unknown, 2160 Unchecked, 1.6s Time] [2022-11-20 12:28:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-11-20 12:28:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 763. [2022-11-20 12:28:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 477 states have (on average 1.0880503144654088) internal successors, (519), 484 states have internal predecessors, (519), 191 states have call successors, (191), 91 states have call predecessors, (191), 94 states have return successors, (333), 187 states have call predecessors, (333), 190 states have call successors, (333) [2022-11-20 12:28:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1043 transitions. [2022-11-20 12:28:37,657 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1043 transitions. Word has length 239 [2022-11-20 12:28:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:37,657 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1043 transitions. [2022-11-20 12:28:37,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 19 states have internal predecessors, (91), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-20 12:28:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1043 transitions. [2022-11-20 12:28:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:28:37,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:37,661 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:37,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:37,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 12:28:37,875 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash -174681448, now seen corresponding path program 1 times [2022-11-20 12:28:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:37,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537254575] [2022-11-20 12:28:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:37,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:28:37,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594757267] [2022-11-20 12:28:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:37,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:37,947 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:37,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5699a7cf-87a7-4f18-b63d-f2da6944c753/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-20 12:28:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 206 conjunts are in the unsatisfiable core [2022-11-20 12:28:39,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:39,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:28:39,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:28:39,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:28:39,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2022-11-20 12:28:39,333 INFO L321 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-11-20 12:28:39,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 12:28:39,451 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6877 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6877) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 12:28:39,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:28:39,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-20 12:28:39,564 INFO L321 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-11-20 12:28:39,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:29:20,093 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:29:20,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:29:20,211 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:29:20,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 12:29:20,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-20 12:29:20,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:29:20,395 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:29:20,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-11-20 12:29:20,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:29:20,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:29:20,803 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6886 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6886)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6887 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6887) |c_#memory_int|)) (exists ((v_ArrVal_6888 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6888)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:29:27,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:29:27,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:29:27,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:29:27,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2022-11-20 12:29:27,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:29:27,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 46